ci(e2e): drop the commented-out sharding matrix

Review feedback on kube-logging#2301. The matrix that would have driven SHARD and SHARDS was
already commented out, and the sharding it fed is gone, so the block goes with
it.

fail-fast stays: it came in with an earlier k8s-version matrix, not this one.

Signed-off-by: Vyncint Ng <115854244+vyncint@users.noreply.github.com>

Author: vyncint

.github/workflows/e2e.yaml

@@ -76,9 +76,6 @@ jobs:
     needs: build
     strategy:
       fail-fast: false
-#      matrix:
-#        SHARD: [0]
-#        SHARDS: [1]
 
     steps:
       - name: Free Disk Space (Ubuntu)
@@ -132,9 +129,6 @@ jobs:
 
       - name: Run e2e tests
         run: make test-e2e-ci
-#        env:
-#          SHARD: ${{ matrix.SHARD }}
-#          SHARDS: ${{ matrix.SHARDS }}
 
       - name: Run coverage report
         uses: vladopajic/go-test-coverage@a93b868a4cbcbf18dc3781650fad241f0020e609 # v2.18.8