Revert "ci: cleanup zephyr workspace"

This reverts commit 356c2d6.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>

Author: nashif

.github/workflows/ci.yml

@@ -1424,9 +1424,6 @@ jobs:
 
         # Create Zephyr workspace
         ZEPHYR_WORKSPACE=${GITHUB_WORKSPACE}/zephyrproject
-        sudo rm -rf ${ZEPHYR_WORKSPACE}/.west
-        sudo rm -rf ${ZEPHYR_WORKSPACE}
-        ls -la  ${ZEPHYR_WORKSPACE}
         west init ${ZEPHYR_WORKSPACE}
         cd ${ZEPHYR_WORKSPACE}