Revert "build: Enable -Wunreachable-code"

This partially reverts commit fa8adbe.

Author: luke-jr

CMakeLists.txt

@@ -442,7 +442,7 @@ else()
   try_append_cxx_flags("-Woverloaded-virtual" TARGET warn_interface SKIP_LINK)
   try_append_cxx_flags("-Wsuggest-override" TARGET warn_interface SKIP_LINK)
   try_append_cxx_flags("-Wimplicit-fallthrough" TARGET warn_interface SKIP_LINK)
-  try_append_cxx_flags("-Wunreachable-code" TARGET warn_interface SKIP_LINK)
+  try_append_cxx_flags("-Wunreachable-code-loop-increment" TARGET warn_interface SKIP_LINK)
   try_append_cxx_flags("-Wdocumentation" TARGET warn_interface SKIP_LINK)
   try_append_cxx_flags("-Wself-assign" TARGET warn_interface SKIP_LINK)
   try_append_cxx_flags("-Wbidi-chars=any" TARGET warn_interface SKIP_LINK)