Revert "Generating assumption loads of vptr after ctor call (fixed)"

Bootstrap bots were failing:

http://lab.llvm.org:8080/green/job/clang-stage2-configure-Rlto_build/6382/
http://bb.pgr.jp/builders/clang-3stage-i686-linux/builds/2969

This reverts r245264.

llvm-svn: 245267