Revert r247692: Replace Triple with a new TargetTuple in MCTargetDesc/* and related. NFC.

Eric has replied and has demanded the patch be reverted.

llvm-svn: 247702
diff --git a/llvm/lib/Target/SystemZ/MCTargetDesc/SystemZMCAsmInfo.h b/llvm/lib/Target/SystemZ/MCTargetDesc/SystemZMCAsmInfo.h
index 6047e75..800f892 100644
--- a/llvm/lib/Target/SystemZ/MCTargetDesc/SystemZMCAsmInfo.h
+++ b/llvm/lib/Target/SystemZ/MCTargetDesc/SystemZMCAsmInfo.h
@@ -14,11 +14,11 @@
 #include "llvm/Support/Compiler.h"
 
 namespace llvm {
-class TargetTuple;
+class Triple;
 
 class SystemZMCAsmInfo : public MCAsmInfoELF {
 public:
-  explicit SystemZMCAsmInfo(const TargetTuple &TT);
+  explicit SystemZMCAsmInfo(const Triple &TT);
 };
 
 } // end namespace llvm