Part of fix for #79175 - merge jsloader module into xpconnect

[Mainly removing jsloader.dll from the gre package list]
sr=alecf(via AIM)

embedding/config/gre-win

@@ -29,11 +29,6 @@ components\history.xpt
 ;
 components\htmlparser.xpt
 
-;
-; javascript
-;
-components\jsloader.dll
-
 ;
 ; imagelib
 ;