Delete outdated comment

Commit migrated from https://github.com/dotnet/coreclr/commit/6430f634896b1f8d82d0a1d6c49a08f05093904a

diff --git a/src/libraries/System.Private.CoreLib/src/System/Text/UTF8Encoding.cs b/src/libraries/System.Private.CoreLib/src/System/Text/UTF8Encoding.cs
index 72d0a58..b581744 100644 (file)
--- a/src/libraries/System.Private.CoreLib/src/System/Text/UTF8Encoding.cs
+++ b/src/libraries/System.Private.CoreLib/src/System/Text/UTF8Encoding.cs
@@ -10,10 +10,6 @@
 // The fast loops attempts to blaze through as fast as possible with optimistic range checks,
 // processing multiple characters at a time, and falling back to the slow loop for all special cases.
 
-// This define can be used to turn off the fast loops. Useful for finding whether
-// the problem is fastloop-specific.
-#define FASTLOOP
-
 using System;
 using System.Buffers;
 using System.Diagnostics;