Added extension structure removal on extension removal. Fixed #1238.
Added extension structure removal on extension removal. Fixed #1238.

Cotonti/Cotonti,Cotonti/valencia,Roffun/Cotonti,Roffun/Cotonti,gorlemik/Cotonti,Cotonti/valencia,gorlemik/Cotonti,1nv4d3r5/Cotonti,1nv4d3r5/Cotonti,Cotonti/valencia,gorlemik/Cotonti,Roffun/Cotonti,Cotonti/Cotonti,gorlemik/Cotonti,Cotonti/Cotonti