Remove FIXME, the constraints contain more options than the
current available documentation.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162065 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Basic/Targets.cpp b/lib/Basic/Targets.cpp
index 769f777..1d495f1 100644
--- a/lib/Basic/Targets.cpp
+++ b/lib/Basic/Targets.cpp
@@ -3083,7 +3083,6 @@
                                 unsigned &NumAliases) const;
   virtual bool validateAsmConstraint(const char *&Name,
                                      TargetInfo::ConstraintInfo &Info) const {
-    // FIXME: Check if this is complete
     switch (*Name) {
     default: break;
     case 'l': // r0-r7