How to resolve legal heir certificate Issues

Hello Sir, I applied legal-heir certificate and in legal-heir certificate, me and my both in-laws are included as i don't have any kids. My inlaws are financially very strong and have much property and have two sons excluded my husband. Now the matter is my husband has five plots in his name as it is my husband's self acquired property. Now we mutations the plots in our name so it divided into three parts as me and my mother in law and father in law. But In our Tahasildar told inlaws shoudl not be have in legalheir and not to take the shares of son as they have financially very strong and have more two sons and inlaws only for maintaince, not for share. I dont know what to do.i was misguided alot. Now the tahasildar gave me idea to cancel inlaws name the legaheir heir to file a petition and take one more fresh legalheir. is it possible to cancel the legalhier of both inlaws name????