gha: Fix gha actions

This PR removes an unrecognized value located in one of the yamls for the
gha in order to make it work the CI again.

Fixes #7149

Signed-off-by: Gabriela Cervantes <gabriela.cervantes.tellez@intel.com>

.github/workflows/run-metrics.yaml

@@ -11,7 +11,6 @@ jobs:
     runs-on: metrics
     env:
       GOPATH: ${{ github.workspace }}
-      ARTIFACTS_DIR: kata-artifacts
     steps:
       - uses: actions/checkout@v3
         with:
@@ -21,10 +20,10 @@ jobs:
         uses: actions/download-artifact@v3
         with:
           name: kata-static-tarball-amd64${{ inputs.tarball-suffix }}
-          path: ${{ ARTIFACTS_DIR }}
+          path: kata-artifacts
 
       - name: Install kata
-        run: bash tests/metrics/gha-run.sh install-kata ${{ ARTIFACTS_DIR }}
+        run: bash tests/metrics/gha-run.sh install-kata kata-artifacts
 
       - name: run launch times on qemu
         run: bash tests/metrics/gha-run.sh run-test-launchtimes-qemu