make the asmparser reject function and type redefinitions. 'Merging' hasn't been

needed since llvm-gcc 3.4 days.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133248 91177308-0d34-0410-b5e6-96231b3b80d8

test/CodeGen/Alpha/private.ll

@@ -6,8 +6,6 @@
 ; RUN: grep \\\$baz: %t
 ; RUN: grep ldah.*\\\$baz %t
 
-declare void @foo()
-
 define private void @foo() {
         ret void
 }