Remove is-fork

Author: diegorusso

.github/workflows/jit.yml

@@ -66,8 +66,6 @@ jobs:
           - false
         llvm:
           - 19
-        is-fork:  # only used for the exclusion trick
-        - ${{ github.repository_owner != 'python' }}
         include:
           - target: i686-pc-windows-msvc/msvc
             architecture: Win32
@@ -90,7 +88,6 @@ jobs:
           - target: aarch64-unknown-linux-gnu/gcc
             architecture: aarch64
             runner: ubuntu-24.04-aarch64
-            is-fork: false
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5