Remove improper ifdef

BUILD

CMakeLists.txt

Makefile

binding.gyp

build.yaml

config.m4

gRPC-Core.podspec

grpc.gemspec

package.xml

src/core/ext/resolver/dns/c_ares/dns_resolver_ares.c

src/core/ext/resolver/dns/c_ares/grpc_ares_wrapper.c

src/core/ext/resolver/dns/c_ares/grpc_ares_wrapper.h

...core/ext/resolver/dns/c_ares/grpc_ares_wrapper_fallback.c

src/core/lib/security/credentials/fake/fake_credentials.c

src/core/lib/security/credentials/fake/fake_credentials.h

src/python/grpcio/grpc_core_dependencies.py

test/core/end2end/fuzzers/api_fuzzer.c

tools/doxygen/Doxyfile.core.internal

tools/run_tests/sources_and_headers.json

vsprojects/vcxproj/grpc/grpc.vcxproj