tests/erofs_test: Remove root check

The erofs tests do not ever mount the generated erofs image. So root is
not needed, as with the squashfs and iso9660 filesystems.

Signed-off-by: Glenn Washburn <development@efficientek.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Reviewed-by: Sudhakar Kuppusamy <sudhakar@linux.ibm.com>

tests/erofs_test.in

@@ -2,14 +2,6 @@
 
 set -ex
 
-if [ "x$EUID" = "x" ] ; then
-  EUID=`id -u`
-fi
-
-if [ "$EUID" != 0 ] ; then
-   exit 99
-fi
-
 if ! which mkfs.erofs >/dev/null 2>&1; then
    echo "mkfs.erofs not installed; cannot test erofs."
    exit 77