Remove *.xcscheme to Global/Xcode.gitignore,Objective-C.gitignore and Swift.gitignore

Global/Xcode.gitignore

@@ -21,4 +21,3 @@ xcuserdata
 *.xccheckout
 *.moved-aside
 *.xcuserstate
-*.xcscheme

Objective-C.gitignore

@@ -22,7 +22,6 @@ xcuserdata
 *.moved-aside
 *.xcuserstate
 *.xcscmblueprint
-*.xcscheme
 
 ## Obj-C/Swift specific
 *.hmap

Swift.gitignore

@@ -22,7 +22,6 @@ xcuserdata
 *.moved-aside
 *.xcuserstate
 *.xcscmblueprint
-*.xcscheme
 
 ## Obj-C/Swift specific
 *.hmap