Space issue u0096 trans directory

On our development system [ECD] trans directory occupied 13 GB space, out of which data folder contributes 7 GB & log folder contributes 3 GB.

There are some data files which were created during client export (around 2.5 GB) & there are some *.SAP files (around 2.5 GB) showing type as “SAP GUI Shortcut”.

EPS\IN folder contains 1 GB ATT & PTT files.

I want to know that if I delete the data files, *.SAP files from data directory and ATT & PTT files from EPS\IN directory then is it cause any inconsistency?

Thanks & Regards

Rajesh