Revert "add ".gitignore""

This reverts commit 0241fee2.

-# This .gitignore file should be placed at the root of your Unity project directory
-#
-# Get latest from https://github.com/github/gitignore/blob/master/Unity.gitignore
-#
-/[Ll]ibrary/
-/[Tt]emp/
-/[Oo]bj/
-/[Bb]uild/
-/[Bb]uilds/
-/[Ll]ogs/
-/[Uu]ser[Ss]ettings/
-
-# MemoryCaptures can get excessive in size.
-# They also could contain extremely sensitive data
-/[Mm]emoryCaptures/
-
-# Asset meta data should only be ignored when the corresponding asset is also ignored
-!/[Aa]ssets/**/*.meta
-
-# Uncomment this line if you wish to ignore the asset store tools plugin
-# /[Aa]ssets/AssetStoreTools*
-
-# Autogenerated Jetbrains Rider plugin
-/[Aa]ssets/Plugins/Editor/JetBrains*
-
-# Visual Studio cache directory
-.vs/
-
-# Gradle cache directory
-.gradle/
-
-# Autogenerated VS/MD/Consulo solution and project files
-ExportedObj/
-.consulo/
-*.csproj
-*.unityproj
-*.sln
-*.suo
-*.tmp
-*.user
-*.userprefs
-*.pidb
-*.booproj
-*.svd
-*.pdb
-*.mdb
-*.opendb
-*.VC.db
-
-# Unity3D generated meta files
-*.pidb.meta
-*.pdb.meta
-*.mdb.meta
-
-# Unity3D generated file on crash reports
-sysinfo.txt
-
-# Builds
-*.apk
-*.unitypackage
-
-# Crashlytics generated file
-crashlytics-build.properties
-
-# Packed Addressables
-/[Aa]ssets/[Aa]ddressable[Aa]ssets[Dd]ata/*/*.bin*
-
-# Temporary auto-generated Android Assets
-/[Aa]ssets/[Ss]treamingAssets/aa.meta
-/[Aa]ssets/[Ss]treamingAssets/aa/*
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