QTextBrowser should not require explicit link color override

resources/templates/book_details.css

@@ -1,7 +1,5 @@
 a {
     text-decoration: none;
-    /* LINK_COLOR below will be replaced with the link color defined by the current color theme */
-    color: LINK_COLOR
 }
 
 a:hover {
@@ -52,4 +50,3 @@ The HTML that this stylesheet applies to looks like this:
 <h3 class="comments-heading">Custom comments column heading</h3>
 <div id="_customcolname" class="comments">...</div>
 */
-

src/calibre/gui2/book_details.py

@@ -57,8 +57,6 @@ def css():
     global _css
     if _css is None:
         val = P('templates/book_details.css', data=True).decode('utf-8')
-        col = QApplication.instance().palette().color(QPalette.Link).name()
-        val = val.replace('LINK_COLOR', col)
         _css = re.sub(unicode_type(r'/\*.*?\*/'), '', val, flags=re.DOTALL)
     return _css