Revert "added lines to get own icons for images" as agreed by @Stainzl
Revert "added lines to get own icons for images" as agreed by @Stainzl

This reverts commit 711969d3

Ruben-Sten/TeXiFy-IDEA,Ruben-Sten/TeXiFy-IDEA,Ruben-Sten/TeXiFy-IDEA,Ruben-Sten/TeXiFy-IDEA