Merge pull request swiftlang#19091 from ahoppen/un-xfail-coloring

[IDE] Un-XFAIL test/IDE/coloring.swift

Author: ahoppen

test/IDE/coloring.swift

@@ -1,6 +1,5 @@
 // RUN: %target-swift-ide-test -syntax-coloring -source-filename %s | %FileCheck %s
 // RUN: %target-swift-ide-test -syntax-coloring -typecheck -source-filename %s | %FileCheck %s
-// XFAIL: broken_std_regex
 
 enum List<T> {
   case Nil