Remove -Wno-undefined-inline

See pybind/pybind11#5664 for context.

Author: bricknerb

pybind11-BUILD.bazel

@@ -21,7 +21,6 @@ cc_library(
         "//conditions:default": [
             "-fexceptions",
             # Useless warnings
-            "-Xclang-only=-Wno-undefined-inline",
             "-Xclang-only=-Wno-pragma-once-outside-header",
             "-Xgcc-only=-Wno-error",  # no way to just disable the pragma-once warning in gcc
         ],