[PM/AA] Remove the last of the legacy update API from AliasAnalysis as

part of simplifying its interface and usage in preparation for porting
to work with the new pass manager.

Note that this will likely expose that we have dead arguments, members,
and maybe even pass requirements for AA. I'll be cleaning those up in
seperate patches. This just zaps the actual update API.

Differential Revision: http://reviews.llvm.org/D11325

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242881 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Transforms/Utils/BasicBlockUtils.cpp

@@ -77,8 +77,6 @@ void llvm::FoldSingleEntryPHINodes(BasicBlock *BB, AliasAnalysis *AA,
 
     if (MemDep)
       MemDep->removeInstruction(PN);  // Memdep updates AA itself.
-    else if (AA && isa<PointerType>(PN->getType()))
-      AA->deleteValue(PN);
 
     PN->eraseFromParent();
   }