Revert "[Temporary] Add an ExprWithCleanups for each C++ MaterializeTemporaryExpr."

This reverts r272296, since there are clang-tidy failures that appear to
be caused by this change.

llvm-svn: 272310
diff --git a/clang/lib/Serialization/ASTWriterStmt.cpp b/clang/lib/Serialization/ASTWriterStmt.cpp
index 911ac47..5382b4a 100644
--- a/clang/lib/Serialization/ASTWriterStmt.cpp
+++ b/clang/lib/Serialization/ASTWriterStmt.cpp
@@ -1430,8 +1430,7 @@
   Record.push_back(E->getNumObjects());
   for (unsigned i = 0, e = E->getNumObjects(); i != e; ++i)
     Record.AddDeclRef(E->getObject(i));
-
-  Record.push_back(E->cleanupsHaveSideEffects());
+  
   Record.AddStmt(E->getSubExpr());
   Code = serialization::EXPR_EXPR_WITH_CLEANUPS;
 }