Q:

Removal of old .AndroidStiudioX.X version folders

After updating AndroidStudio to version 1.4, I noticed there are multiple older version files, in this case for 1.2, 1.3 totaling 1.9 GB space:
 
Given I am using version 1.4, can I simply delete these old folders without hurting the present version? 

A:

Yes you can safely delete all the previous folders.  As all the caches and libraries are now transferred to .AndroidStudio1.4.