Remove increased font size for fold elipses

Making them bigger looks good, but also makes lines with these fold
markers taller than typical lines, which throws off the positioning
of everything below them.

static/editor.css

@@ -69,7 +69,6 @@
   opacity: .8;
   color: #fba0e3;
   padding-left: .2em;
-  font-size: 1.1em;
   font-family: 'Octicons Regular';
   -webkit-font-smoothing: antialiased;
 }