Fix broken Test Docker Android

Summary:
Test Docker Android is failing with `No space left on device`
I've fixed it by freeing up some space on the runner.

I'm looking into potentially removing this job entirely as I believe it's not
really helpful at the moment.

Changelog:
[Internal] [Changed] - Fix broken Test Docker Android

Reviewed By: ShikaSD

Differential Revision: D35013831

fbshipit-source-id: 594e65fa05c7dfc8b5acfde88658b341d26aa586

.github/workflows/test-docker-android.yml

@@ -5,7 +5,6 @@ on:
     branches:
       - main
   pull_request:
-    types: [ synchronize ]
     branches:
       - main
 
@@ -15,5 +14,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
+      - name: Free up space by removing unnecessary folders
+        run: |
+          sudo rm -rf /usr/share/dotnet
+          sudo rm -rf /opt/ghc
+          sudo rm -rf "$AGENT_TOOLSDIRECTORY"
       - name: Build Docker image with Android test app
         run: npm run docker-build-android