remove library link

config.yml

@@ -24,6 +24,7 @@ markup:
   highlight:
     anchorLineNos: true
     codeFences: true
+    lineNumbersInTable: true
     noClasses: true
     style: algol_nu
     tabWidth: 4
@@ -42,7 +43,3 @@ menu:
       name: Pipes
       url: /pipes
       weight: 120
-    - identifier: library
-      name: Library
-      url: /library
-      weight: 130