Remove unnecessary environment variable from build.yml

Author: na-ka-no

.github/workflows/build.yml

@@ -1,8 +1,5 @@
 on: [push, pull_request, workflow_dispatch]
 
-env:
-  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true
-
 jobs:
   build:
     uses: zmkfirmware/zmk/.github/workflows/build-user-config.yml@v0.3.0