Revert "STATIC CHECKS: Sets TF-M repo to unshallow"

This reverts commit 8d6a330e73b30e604511b2bc1e4677bfca186efe.

Reason for revert: Did not serve intended purpose

Change-Id: I9bfa73421f72eed6b2d302e1d4677e5d1f5e7a9e
diff --git a/clone.sh b/clone.sh
index 2723232..7060091 100755
--- a/clone.sh
+++ b/clone.sh
@@ -107,10 +107,6 @@
     exit 1
 fi
 
-if [ "${JOB_NAME}" = "tf-m-static-checks" ]; then
-    git -C ${WORKSPACE}/${TFM_NAME} fetch --unshallow
-fi
-
 pip install --no-deps ../trusted-firmware-m/
 
 # Dependency projects