Remove unnecessary CI steps (open-telemetry#6742)

Since tests aren't run on assemble, these shouldn't be needed.

.github/workflows/reusable-assemble.yml

@@ -29,9 +29,6 @@ jobs:
  distribution: temurin
  java-version: 17
 
- - name: Start deadlock detector
- run: .github/scripts/deadlock-detector.sh
-
  - name: Assemble
  uses: gradle/gradle-build-action@v2
  env:
@@ -73,24 +70,3 @@ jobs:
  echo $(git diff)
  exit 1
  fi
-
- - name: Upload deadlock detector artifacts if any
- if: always()
- uses: actions/upload-artifact@v3
- with:
- name: deadlock-detector-assemble
- path: /tmp/deadlock-detector-*
- if-no-files-found: ignore
-
- - name: Upload jvm crash dump files if any
- if: always()
- uses: actions/upload-artifact@v3
- with:
- name: javacore-assemble
- path: |
- **/hs_err_pid*.log
- **/javacore.*.txt
- **/Snap.*.trc
- **/core.*.dmp
- **/jitdump.*.dmp
- if-no-files-found: ignore