gh-152785: Upgrade GCC from 10 to 13 in GHA Address Sanitizer (#152782)

Remove the step which installs GCC 10. This step was needed when
Ubuntu only had GCC 9. We are now using Ubuntu 24.04 which has GCC
13.

Author: vstinner

.github/workflows/build.yml

@@ -519,10 +519,6 @@ jobs:
       run: echo "::add-matcher::.github/problem-matchers/gcc.json"
     - name: Install dependencies
       run: sudo ./.github/workflows/posix-deps-apt.sh
-    - name: Set up GCC-10 for ASAN
-      uses: egor-tensin/setup-gcc@a2861a8b8538f49cf2850980acccf6b05a1b2ae4 # v2.0
-      with:
-        version: 10
     - name: Configure OpenSSL env vars
       run: |
         echo "MULTISSL_DIR=${GITHUB_WORKSPACE}/multissl" >> "$GITHUB_ENV"