[GC][NFC] Simplify code now that we only have one safepoint kind

This is the NFC follow up to exploit the semantic simplification from r346701

llvm-svn: 346712
diff --git a/llvm/lib/CodeGen/GCMetadata.cpp b/llvm/lib/CodeGen/GCMetadata.cpp
index 4bf5335..1c80556 100644
--- a/llvm/lib/CodeGen/GCMetadata.cpp
+++ b/llvm/lib/CodeGen/GCMetadata.cpp
@@ -103,14 +103,6 @@
   AU.addRequired<GCModuleInfo>();
 }
 
-static const char *DescKind(GC::PointKind Kind) {
-  switch (Kind) {
-  case GC::PostCall:
-    return "post-call";
-  }
-  llvm_unreachable("Invalid point kind");
-}
-
 bool Printer::runOnFunction(Function &F) {
   if (F.hasGC())
     return false;
@@ -127,7 +119,7 @@
   for (GCFunctionInfo::iterator PI = FD->begin(), PE = FD->end(); PI != PE;
        ++PI) {
 
-    OS << "\t" << PI->Label->getName() << ": " << DescKind(PI->Kind)
+    OS << "\t" << PI->Label->getName() << ": " << "post-call"
        << ", live = {";
 
     for (GCFunctionInfo::live_iterator RI = FD->live_begin(PI),