openshift_expand_partition: remove unused vars

roles/openshift_expand_partition/defaults/main.yml

@@ -7,10 +7,6 @@ oep_drive: "/dev/xvda"
 # Partition that we wish to expand.
 oep_partition: 3
 
-# oep_partition_mount_point
-# Where the partition is mounted
-oep_partition_mount_point: /var
-
 # oep_file_system
 # What file system is on the partition
 #   Currently only xfs, and ext(2,3,4) are supported