Merge pull request 'remove unused files, and downgrade burst package to 1.4.8(verified)' (#3) from /main/plin into /main

Reviewed-on: https://plastichub.unity.cn/unity-tech-cn/BoatAttack-AutoStreaming/pulls/3

Packages/manifest.json

         "com.unity.addressables": "1.18.9",
         "com.unity.autostreaming": "0.1.0-preview.1",
         "com.unity.build-report-inspector": "0.2.2-preview",
-        "com.unity.burst": "1.5.4",
+        "com.unity.burst": "1.4.8",
         "com.unity.cinemachine": "2.6.0",
         "com.unity.ide.rider": "2.0.5",
         "com.unity.ide.visualstudio": "2.0.8",

Packages/packages-lock.json

       "url": "https://packages-v2.unity.cn"
     },
     "com.unity.burst": {
-      "version": "1.5.4",
+      "version": "1.4.8",
       "depth": 0,
       "source": "registry",
       "dependencies": {

.gitattributes

-*.psd filter=lfs diff=lfs merge=lfs -text
-*.png filter=lfs diff=lfs merge=lfs -text
-*.exr filter=lfs diff=lfs merge=lfs -text
-*.zip filter=lfs diff=lfs merge=lfs -text
-*.tiff filter=lfs diff=lfs merge=lfs -text
-*.tif filter=lfs diff=lfs merge=lfs -text
-*.raw filter=lfs diff=lfs merge=lfs -text
-*.fbx filter=lfs diff=lfs merge=lfs -text
-*.jpg filter=lfs diff=lfs merge=lfs -text
-*.wav filter=lfs diff=lfs merge=lfs -text
-*.obj filter=lfs diff=lfs merge=lfs -text
-*.aiff filter=lfs diff=lfs merge=lfs -text
-*.tga filter=lfs diff=lfs merge=lfs -text

.gitignore

-/[Ll]ibrary/
-/[Tt]emp/
-/[Oo]bj/
-/[Bb]uild/
-/[Bb]uilds/
-/Assets/AssetStoreTools*
-
-# Visual Studio 2015 cache directory
-/.vs/
-
-# Autogenerated VS/MD/Consulo solution and project files
-ExportedObj/
-.consulo/
-*.csproj
-*.unityproj
-*.sln
-*.suo
-*.tmp
-*.user
-*.userprefs
-*.pidb
-*.booproj
-*.svd
-*.pdb
-
-# Unity3D generated meta files
-*.pidb.meta
-
-# Unity3D Generated File On Crash Reports
-sysinfo.txt
-
-# Builds
-*.apk
-*.unitypackage
-Assets/_Ignore
-_Ignore.meta
-.idea
-Logs
-Assets/Plugins/Editor/JetBrains
-Assets/Plugins/Editor/JetBrains.meta
-Recordings
-Packages/com.unity.*
-MemoryCaptures
-Assets/BuildReports
-SerializedBuildInfo
-SwitchIL2CPP*