Revert "CI: Add pull secret info in microshift workflow job"

This reverts commit ec99aaa.

Looks like this is not allowing PR from fork and those are still
failing.

.github/workflows/macos-microshift.yml

@@ -35,21 +35,6 @@ jobs:
         uses: actions/setup-go@v3
         with:
           go-version: ${{ matrix.go }}
-      - name: check if OCP_PULL_SECRET exists
-        shell: bash
-        run: |
-          if [ ${PULL_SECRET} == "" ]; then
-            echo "The secret \"OCP_PULL_SECRET\" is not set; echo please go to \"settings > secrets > actions\" to create it"
-            exit 1
-          fi
-        env:
-          PULL_SECRET: ${{ secrets.OCP_PULL_SECRET }}
-      - name: Write the pull secret to json file
-        shell: bash
-        run: |
-          echo $PULL_SECRET > temp-ps.json
-        env:
-          PULL_SECRET: ${{ secrets.OCP_PULL_SECRET }}
       - name: Build macOS installer
         run: make NO_CODESIGN=1 out/macos-universal/crc-macos-installer.pkg
       - name: Install crc pkg
@@ -61,4 +46,4 @@ jobs:
       - name: Wait 10 sec for the daemon to serve
         run: sleep 10
       - name: Run crc with microshift preset
-        run: crc start --pull-secret-file temp-ps.json
+        run: crc start