Fix cmake var and remove extra line passing a MinSizeRel config

Author: amykhuang

.github/workflows/libc-fullbuild-tests.yml

@@ -108,7 +108,7 @@ jobs:
         -DCMAKE_C_COMPILER_LAUNCHER=${{ matrix.ccache-variant }} \
         -DCMAKE_CXX_COMPILER_LAUNCHER=${{ matrix.ccache-variant }} \
         -DCMAKE_INSTALL_PREFIX=${{ steps.strings.outputs.build-install-dir }} \
-        -DLLVM_RUNTIMES_TARGET=${{ matrix.target }} \
+        -DLLVM_RUNTIME_TARGETS=${{ matrix.target }} \
         -DLLVM_ENABLE_RUNTIMES="$RUNTIMES" \
         -DLLVM_LIBC_FULL_BUILD=ON \
         -G Ninja \

.github/workflows/libc-overlay-tests.yml

@@ -110,7 +110,6 @@ jobs:
         cmake 
         --build ${{ steps.strings.outputs.build-output-dir }} 
         --parallel 
-        --config MinSizeRel 
         --target libc
 
     - name: Test