Its not 100% clear what you mean.  If you mean deleting a text layer in an existing xcf file..then yes...

If however you expect to open an existing jpeg, bmp, png, etc... file and have gimp figure out what is and is not "text" content and then do something intelligent. ..yea..your would be better off asking for lighting to strike you at the presice moment your read this email...

Besides...to some degree(ie..based upon the specifics in the image as well as the users skill) this can already be done in a number of ways..but always requiring some effort put into it...  Of course...there is also the assumption that you as the editor of the image have a right to acutally edit said image(and generally "you" would have been the person to put such text there in the first place...)

-------- Original message -------- From: anu nivas
Date: 2013/08/27 13:34 (GMT-05:00) To: gimp-user-list@gnome.org
Subject: [Gimp-user] is it possible for the eraser tool to wipe out only text and leave the background as before
Hello,

If the eraser tool does not perform the above function, how should I make a feature request?

Thank you
Anupama
www.udproducts.in