[COMM] Fix remaining style issues with eula

communicator/components/eula/content/eula.xul

@@ -23,10 +23,7 @@
   <script type="application/javascript" src="chrome://communicator/content/eula/eula.js"/>
 
   <dialogheader id="eula-header" class="header-large" title="&eula.header.title;" description="&eula.header.description;"/>
-  
-  <vbox id="main">
-    <label value=""/>
-  </vbox>
-
-  <separator class="groove-thin"/>
+  <separator/>
+  <vbox id="main"/>
+  <separator/>
 </dialog>

communicator/components/eula/jar.mn

@@ -11,9 +11,4 @@ en-US.jar:
   locale/en-US/communicator/eula/eula.dtd             (locale/eula.dtd)
 
 classic.jar:
-  skin/communicator/eula/eula.js                      (skin/classic/eula.css)
-
-#ifdef BINOC_BOREALIS
-modern.jar:
-  skin/communicator/eula/eula.js                      (skin/modern/eula.css)
-#endif
+  skin/communicator/eula/eula.css                     (skin/eula.css)