Support for other font in CSS

data/epub_files/epubcontentopf.xml

@@ -5,10 +5,6 @@
     <item id="ncx" href="toc.ncx" media-type="application/x-dtbncx+xml" />
     <item id="intro" href="intro.xhtml" media-type="application/xhtml+xml" />
     <item id="css" href="eoa-epub.css" media-type="text/css" />
-    <item href="fonts/texgyretermes-regular.otf" id="otf-font1" media-type="application/vnd.ms-opentype"/>
-    <item href="fonts/texgyretermes-italic.otf" id="otf-font2" media-type="application/vnd.ms-opentype"/>
-    <item href="fonts/texgyretermes-bold.otf" id="otf-font3" media-type="application/vnd.ms-opentype"/>
-    <item href="fonts/texgyretermes-bolditalic.otf" id="otf-font4" media-type="application/vnd.ms-opentype"/>
   </manifest>
   <spine toc="ncx">
     <itemref idref="cover" />