Pacify recent gcc: remove a pointless const qualifier.

llvm-svn: 105318
diff --git a/llvm/utils/TableGen/NeonEmitter.cpp b/llvm/utils/TableGen/NeonEmitter.cpp
index f99cbe4..7709637 100644
--- a/llvm/utils/TableGen/NeonEmitter.cpp
+++ b/llvm/utils/TableGen/NeonEmitter.cpp
@@ -72,7 +72,7 @@
   }
 }
 
-static const char Widen(const char t) {
+static char Widen(const char t) {
   switch (t) {
     case 'c':
       return 's';