Concern regarding articleship registration

Respected sir/ma'am,

I have joined ca firm and now I don't want to work there.

I have filled form 102 n done with franking and my principal has also approved the same.

I have also submitted form 112 for other course & but 103 form is yet to be submitted.

On form 102 and 103  there is a option to delete.

So I want to ask u that CAN I DELETE form 102 and 103, and start in some other firm as a new article (i.e., without taking transfer) because delete is available 

OR I CANNOT  DO THAT?

PLEASE DO REPLY AND GUIDE ME.