Merge pull request swiftlang#372 from apple/remove-rxswift-xfail

Remove xfail for RxSwift/RxCocoa

Author: shahmishal

projects.json

@@ -2119,16 +2119,7 @@
         "scheme": "RxCocoa",
         "destination": "platform=macOS",
         "configuration": "Release",
-        "tags": "sourcekit",
-        "xfail": {
-          "compatibility": {
-            "5.1": {
-              "branch": {
-                "master": "https://bugs.swift.org/browse/SR-11141"
-              }
-            }
-          }
-        }
+        "tags": "sourcekit"
       },
       {
         "action": "BuildXcodeWorkspaceScheme",