remove cxx03 test, fully unblocking c++1X development (#1903)

* remove cxx03 test, fully unblocking c++1X development

* remove unnecessary macros

* pre-commit

* remove opt-in analyzer warnings from clang-tidy

* revert some changes, flush streams

* replace abort with exit(1) to call atexit and dtors

* remove more endl and put in explicit flush

Author: dmah42

.github/workflows/clang-tidy.yml

@@ -35,4 +35,4 @@ jobs:
     - name: run
       shell: bash
       working-directory: ${{ runner.workspace }}/_build
-      run: run-clang-tidy -checks=*,-clang-analyzer-deadcode*
+      run: run-clang-tidy -checks=*,-clang-analyzer-deadcode*,-clang-analyzer-optin*