chore(ci): remove no longer necessary setup-go

Author: ckipp01

.github/workflows/ci.yml

@@ -21,9 +21,6 @@ jobs:
           distribution: 'temurin'
           cache: 'sbt'
           java-version: ${{ matrix.java }}
-      - uses: actions/setup-go@v2
-        with:
-          go-version: "^1.13.1"
       - run: sbt test
   bazel:
     runs-on: ubuntu-latest

.github/workflows/sourcegraph.yml

@@ -18,10 +18,6 @@ jobs:
           java-version: 8
           cache: 'sbt'
 
-      - uses: actions/setup-go@v2
-        with:
-          go-version: "1.15.6"
-
       - name: Install src
         run: yarn global add @sourcegraph/src