Revert "Add deep copying support for typed AST nodes" This reverts commit d0d59aa4cbce2da92deaa0f4021dfed8885e8d01 and commit 760379532b02ae039790f1e8f1c89e03481aab4b To be fixed will be the newline at the end of IntermNode_tests.cpp and the -Winconsistent-missing-override BUG= Change-Id: I57693bdff01f9e3f03b2fbb5dc53fa21e68c2789 Reviewed-on: https://chromium-review.googlesource.com/294820 Reviewed-by: Corentin Wallez <cwallez@chromium.org> Tested-by: Corentin Wallez <cwallez@chromium.org>