Remove httpclient5_test (#4562)

Co-authored-by: Richard North <[email protected]>

Author: bsideup

.github/workflows/ci.yml

@@ -56,12 +56,3 @@ jobs:
       - name: Build and test with Gradle (${{matrix.gradle_args}})
         run: |
           ./gradlew --no-daemon --continue --scan ${{matrix.gradle_args}}
-  httpclient5_test:
-    runs-on: ubuntu-18.04
-    steps:
-      - uses: actions/checkout@v2
-      - name: Build with Gradle
-        run: |
-          echo "transport.type=httpclient5" > $HOME/.testcontainers.properties
-          cat $HOME/.testcontainers.properties
-          ./gradlew --no-daemon --scan testcontainers:test --tests '*EventStreamTest'