docs: remove invalid links (#825)

## What type of PR is this?
/kind documentation

## What this PR does / why we need it:

remove invalid links

## Which issue(s) this PR fixes:

<!--
*Automatically closes linked issue when PR is merged.
Usage: `Fixes #<issue number>`, or `Fixes (paste link of issue)`.
_If PR is about `failing-tests or flakes`, please post the related
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Fixes #

Author: fanfan-yu

README-ja.md

@@ -29,7 +29,6 @@
 [![CNCF](https://shields.io/badge/CNCF-Sandbox%20project-blue?logo=linux-foundation&style=flat)](https://landscape.cncf.io/?item=provisioning--automation-configuration--kusionstack)
 [![FOSSA Status](https://app.fossa.com/api/projects/git%2Bgithub.com%2FKusionStack%2Fkarpor.svg?type=shield)](https://app.fossa.com/projects/git%2Bgithub.com%2FKusionStack%2Fkarpor?ref=badge_shield)
 [![Gitpod Ready-to-Code](https://img.shields.io/badge/Gitpod-Ready--to--Code-blue?logo=gitpod)](https://gitpod.io/#https://github.com/KusionStack/karpor)
-[![Twitter Follow](https://img.shields.io/twitter/follow/KusionStack?style=social)](https://twitter.com/KusionStack)
 [![Medium](https://img.shields.io/badge/@kusionstack-black?style=flat&logo=medium&logoColor=white&link=https://medium.com/@kusionstack)](https://medium.com/@kusionstack)
 [![Slack](https://img.shields.io/badge/slack-kusion-blueviolet?logo=slack)](https://cloud-native.slack.com/archives/C07U0395UG0)
 

README-pt.md

@@ -30,7 +30,6 @@
 [![CNCF](https://shields.io/badge/CNCF-Sandbox%20project-blue?logo=linux-foundation&style=flat)](https://landscape.cncf.io/?item=provisioning--automation-configuration--kusionstack)
 [![FOSSA Status](https://app.fossa.com/api/projects/git%2Bgithub.com%2FKusionStack%2Fkarpor.svg?type=shield)](https://app.fossa.com/projects/git%2Bgithub.com%2FKusionStack%2Fkarpor?ref=badge_shield)
 [![Gitpod Ready-to-Code](https://img.shields.io/badge/Gitpod-Ready--to--Code-blue?logo=gitpod)](https://gitpod.io/#https://github.com/KusionStack/karpor)
-[![Twitter Follow](https://img.shields.io/twitter/follow/KusionStack?style=social)](https://twitter.com/KusionStack)
 [![Medium](https://img.shields.io/badge/@kusionstack-black?style=flat&logo=medium&logoColor=white&link=https://medium.com/@kusionstack)](https://medium.com/@kusionstack)
 [![Slack](https://img.shields.io/badge/slack-kusion-blueviolet?logo=slack)](https://cloud-native.slack.com/archives/C07U0395UG0)
 

README-zh.md

@@ -29,7 +29,6 @@
 [![CNCF](https://shields.io/badge/CNCF-Sandbox%20project-blue?logo=linux-foundation&style=flat)](https://landscape.cncf.io/?item=provisioning--automation-configuration--kusionstack)
 [![FOSSA Status](https://app.fossa.com/api/projects/git%2Bgithub.com%2FKusionStack%2Fkarpor.svg?type=shield)](https://app.fossa.com/projects/git%2Bgithub.com%2FKusionStack%2Fkarpor?ref=badge_shield)
 [![Gitpod Ready-to-Code](https://img.shields.io/badge/Gitpod-Ready--to--Code-blue?logo=gitpod)](https://gitpod.io/#https://github.com/KusionStack/karpor)
-[![Twitter Follow](https://img.shields.io/twitter/follow/KusionStack?style=social)](https://twitter.com/KusionStack)
 [![Medium](https://img.shields.io/badge/@kusionstack-black?style=flat&logo=medium&logoColor=white&link=https://medium.com/@kusionstack)](https://medium.com/@kusionstack)
 [![Slack](https://img.shields.io/badge/slack-kusion-blueviolet?logo=slack)](https://cloud-native.slack.com/archives/C07U0395UG0)
 

README.md

@@ -29,7 +29,6 @@
 [![CNCF](https://shields.io/badge/CNCF-Sandbox%20project-blue?logo=linux-foundation&style=flat)](https://landscape.cncf.io/?item=provisioning--automation-configuration--kusionstack)
 [![FOSSA Status](https://app.fossa.com/api/projects/git%2Bgithub.com%2FKusionStack%2Fkarpor.svg?type=shield)](https://app.fossa.com/projects/git%2Bgithub.com%2FKusionStack%2Fkarpor?ref=badge_shield)
 [![Gitpod Ready-to-Code](https://img.shields.io/badge/Gitpod-Ready--to--Code-blue?logo=gitpod)](https://gitpod.io/#https://github.com/KusionStack/karpor)
-[![Twitter Follow](https://img.shields.io/twitter/follow/KusionStack?style=social)](https://twitter.com/KusionStack)
 [![Medium](https://img.shields.io/badge/@kusionstack-black?style=flat&logo=medium&logoColor=white&link=https://medium.com/@kusionstack)](https://medium.com/@kusionstack)
 [![Slack](https://img.shields.io/badge/slack-kusion-blueviolet?logo=slack)](https://cloud-native.slack.com/archives/C07U0395UG0)
 

docs/conventions/test-conventions.md

@@ -107,7 +107,6 @@ func TestFlagParser(t *testing.T) {
 It is worth noting that most mainstream IDEs have already integrated [gotests](https://github.com/cweill/gotests), enabling the automatic generation of table-driven style Go unit tests, which I believe can enhance the efficiency of writing your unit tests:
 
 - [GoLand](https://blog.jetbrains.com/go/2020/03/13/test-driven-development-with-goland/)
-- [Visual Studio Code](https://juandes.com/go-test-vsc/)
 
 ### File Naming
 

pkg/README.md

@@ -8,7 +8,7 @@ Note that this is not a universally accepted pattern and for every popular repo
 
 Ok not to use it if your app project is really small and where an extra level of nesting doesn't add much value (unless you really want to). Think about it when it's getting big enough and your root directory gets pretty busy (especially if you have a lot of non-Go app components).
 
-The `pkg` directory origins: The old Go source code used to use `pkg` for its packages and then various Go projects in the community started copying the pattern (see [`this`](https://twitter.com/bradfitz/status/1039512487538970624) Brad Fitzpatrick's tweet for more context).
+The `pkg` directory origins: The old Go source code used to use `pkg` for its packages and then various Go projects in the community started copying the pattern.
 
 
 Examples: