No changes, erasures, modifications or revisions shall be made in any subdivision plat after approval has been given by the Planning Board and endorsed in writing on the plat, unless said plat is first resubmitted to the Planning Board and such Board approves, in writing, any such modifications. In the event that any subdivision plat is recorded without complying with these requirements, the same shall be considered null and void, and the Planning Board shall institute proceedings to have the plat stricken from the records of the County Clerk.