Default Issue atfer Using .nomedia method

Hi i have tried .nomedia method by copying and pasting .nomedia file to device storage & to sd card
actually it worked great but when i tried to back to normal by deleting .nomedia files and i made force media scan by unmounting sd card then restarting now i canít find ".thumbnails" in "settings->General->storage->miscellaneous files" how to fix this? i still able to find it in "Device Storage" - > "DCIM" any ideas without factory reset?
phone: Samsung Galaxy Grand 2
OS:Jelly Bean 4.3