colorbox: remove an inline javascript
colorbox: remove an inline javascript

This was done for Galleria theme in commit 96d6623.

t-animal/sigal,t-animal/sigal,t-animal/sigal,saimn/sigal,xouillet/sigal,saimn/sigal,jasuarez/sigal,xouillet/sigal,saimn/sigal,xouillet/sigal,jasuarez/sigal,jasuarez/sigal