Revert "oniro-linux.conf: Fix TCLIBC to musl for openharmony builds"

This reverts commit 8ee245d6.

Signed-off-by: Andrei Gherzan <andrei.gherzan@huawei.com>

meta-oniro-core/conf/distro/oniro-linux.conf

@@ -109,8 +109,6 @@ SPLASH = "psplash-oniro"
 DISTRO_FEATURES_FILTER_NATIVE:append = " openharmony"
 DISTRO_FEATURES_FILTER_NATIVESDK:append = " openharmony"
 require conf/distro/include/openharmony.inc
-# OpenHarmony requires musl libc, so we cannot allow other TCLIBC values
-TCLIBC:df-openharmony = "musl"
 
 # We run a read-only rootfs but we want shadow because it includes subid
 # configuration used by podman in rootless mode.