Remove an over-zealous assertion.  A pointer type could be illegal if the target is prepared to custom-legalize pointer operands.  This assertion was evaluated before the target would have a chance to do so, making it impossible.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189299 91177308-0d34-0410-b5e6-96231b3b80d8