Enable Werror only for Nheko target in clazy CI

.gitlab-ci.yml

@@ -27,7 +27,7 @@ build-clazy:
         -DHUNTER_ENABLED=OFF -DBUILD_SHARED_LIBS=OFF -DUSE_BUNDLED_OPENSSL=ON -DUSE_BUNDLED_MTXCLIENT=ON -DUSE_BUNDLED_COEURL=ON -DUSE_BUNDLED_LMDBXX=ON -DUSE_BUNDLED_OLM=ON
         -DVOIP=OFF
         -DCMAKE_BUILD_TYPE=Release
-        -DCI_BUILD=ON -DFETCHCONTENT_QUIET=OFF -DCMAKE_CXX_COMPILER=clazy -DCMAKE_CXX_FLAGS="-Werror"
+        -DCI_BUILD=ON -DFETCHCONTENT_QUIET=OFF -DCMAKE_CXX_COMPILER=clazy
     - cmake --build build
   cache:
     key: "$CI_JOB_NAME"