bazel: remove duplicate -gsplit-dwarf argument (#18381)
bazel: remove duplicate -gsplit-dwarf argument (#18381)

With `--config=linux` we enable `per_object_debug_info`, which passes
this flag, so we don't also need to pass it here, otherwise you cannot
build without split debug info.

Signed-off-by: Keith Smiley <cadcacca0656fa2178c91a0e61e28374cd3a79c3@gmail.com>
envoyproxy/envoy,lyft/envoy,envoyproxy/envoy,envoyproxy/envoy,lyft/envoy,lyft/envoy,envoyproxy/envoy,envoyproxy/envoy,envoyproxy/envoy,envoyproxy/envoy,envoyproxy/envoy,envoyproxy/envoy,lyft/envoy,lyft/envoy,envoyproxy/envoy,envoyproxy/envoy,lyft/envoy,envoyproxy/envoy