Revert "fixing figures caption"

This reverts commit edb76f8.
The right fix is given in fmarotta#223

kao.sty

@@ -545,7 +545,7 @@
 	\marginskip{\kaomarginskipabove}%
 	\begin{lrbox}{\@sidenotes@marginfigurebox}%
 	\begin{minipage}{\marginparwidth}%
-	\captionsetup{type=figure,labelsep=space}%
+		\captionsetup{type=figure}%
 }{%
 	\end{minipage}%
 	\end{lrbox}%
@@ -652,7 +652,6 @@
 \captionsetup{
 	format=margin, % Use the style previously declared
 	strut=no,%
-  labelsep=space, % to avoid .: in figure captions
 	%hypcap=true, % Links point to the top of the figure
 	singlelinecheck=false,%
 	%width=\marginparwidth,