Restore JavaScript highlighting (#1046)

Remove definition of Name.Builtin and Name.Other (only used by JS highlighter) to use the default color again. Fix Name.Builtin.Pseudo class name.

Author: Simran-B

styles/pygments-arango.css

@@ -20,12 +20,10 @@
 .highlight .s { color: #a31515 } /* Literal.String */
 .highlight .nc { color: #2b91af } /* Name.Class */
 .highlight .no { color: #0000ff } /* Name.Constant */
-.highlight .nb { color: #0000ff } /* Name.Builtin */
-.highlight .np { color: #0000ff; font-style: italic } /* Name.Builtin.Pseudo */
+.highlight .bp { color: #0000ff; font-style: italic } /* Name.Builtin.Pseudo */
 .highlight .nf { color: #3c4c72; } /* Name.Function */
 .highlight .nv { color: #8959a8 } /* Name.Variable */
 .highlight .vg { color: #8959a8 } /* Name.Variable.Global */
-.highlight .nx { color: #0000ff } /* Name.Other */
 .highlight .ow { color: #0000ff } /* Operator.Word */
 .highlight .sb { color: #a31515 } /* Literal.String.Backtick */
 .highlight .sc { color: #a31515 } /* Literal.String.Char */