Translator: Remove disableValidateFunctionCall from transformation This validation is disabled in three transformations and re-enabled afterwards. Two of these benefit from the simplicity it brings, and this change removes it from the other transformation. Bug: angleproject:6506 Change-Id: I946b547ed0e2ed39062914a7771e9635ff5e406d Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3212289 Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Tim Van Patten <timvp@google.com>