including .csproj.meta files in the git repo (Unity-Technologies#226)

* including .csproj.meta files in the git repo

* Remove repository property to make upm-ci happy.

Co-authored-by: Dale Kim <3121968+unpacklo@users.noreply.github.com>

Author: bmcnett

.gitignore

@@ -8,7 +8,6 @@ Library
 obj
 obj.meta
 # User-specific files
-*.csproj.meta
 *.csproj.user
 *.suo
 *.user

src/Tests/Unity.Mathematics.Tests.csproj.meta

@@ -8,10 +8,5 @@
         "unity"
     ],
     "dependencies": {
-    },
-    "repository": {
-        "type": "git",
-        "url": "https://github.com/Unity-Technologies/Unity.Mathematics",
-        "revision":""
     }
 }