[libc][workflows] try fix build

Author: SchrodingerZhu

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

@@ -18,9 +18,8 @@ jobs:
         include:
           - c_compiler: clang
             cpp_compiler: clang++
-          # TODO: add back gcc build when it is fixed
-          # - c_compiler: gcc
-          #   cpp_compiler: g++
+          - c_compiler: gcc
+            cpp_compiler: g++
     steps:
     - uses: actions/checkout@v4
 
@@ -44,7 +43,7 @@ jobs:
     - name: Prepare dependencies (Ubuntu)
       run: |
         sudo apt-get update
-        sudo apt-get install -y libmpfr-dev libgmp-dev libmpc-dev ninja-build linux-headers-generic linux-libc-dev
+        sudo apt-get install -y libmpfr-dev libgmp-dev libmpc-dev ninja-build linux-libc-dev
         sudo ln -sf /usr/include/$(uname -p)-linux-gnu/asm /usr/include/asm
 
     - name: Set reusable strings