TBAA: remove !tbaa from testing cases if not used.

This will make it easier to turn on struct-path aware TBAA since the metadata
format will change.

llvm-svn: 180796
diff --git a/llvm/test/CodeGen/Mips/zeroreg.ll b/llvm/test/CodeGen/Mips/zeroreg.ll
index 79ed609..e0e93e2 100644
--- a/llvm/test/CodeGen/Mips/zeroreg.ll
+++ b/llvm/test/CodeGen/Mips/zeroreg.ll
@@ -6,7 +6,7 @@
 entry:
 ; CHECK:     movn ${{[0-9]+}}, $zero
   %tobool = icmp ne i32 %s, 0
-  %0 = load i32* @g1, align 4, !tbaa !0
+  %0 = load i32* @g1, align 4
   %cond = select i1 %tobool, i32 0, i32 %0
   ret i32 %cond
 }
@@ -15,11 +15,7 @@
 entry:
 ; CHECK:     movz ${{[0-9]+}}, $zero
   %tobool = icmp ne i32 %s, 0
-  %0 = load i32* @g1, align 4, !tbaa !0
+  %0 = load i32* @g1, align 4
   %cond = select i1 %tobool, i32 %0, i32 0
   ret i32 %cond
 }
-
-!0 = metadata !{metadata !"int", metadata !1}
-!1 = metadata !{metadata !"omnipotent char", metadata !2}
-!2 = metadata !{metadata !"Simple C/C++ TBAA", null}