clang-tidy: Enable checks that have no existing violations

.clang-tidy

@@ -19,7 +19,6 @@ Checks: >
   -bugprone-suspicious-stringview-data-usage,
   -bugprone-switch-missing-default-case,
   -bugprone-throwing-static-initialization,
-  -bugprone-too-small-loop-variable,
   -bugprone-unchecked-optional-access,
   -bugprone-unchecked-string-to-number-conversion,
   -bugprone-unhandled-code-paths,
@@ -27,7 +26,6 @@ Checks: >
   -bugprone-unused-return-value,
   -bugprone-use-after-move,
   misc-*,
-  -misc-confusable-identifiers,
   -misc-const-correctness,
   -misc-explicit-constructor,
   -misc-include-cleaner,