Do not load readline from util.inspect

This causes all modules using console.log() to load readline which seems
unnecessary.

lib/util.js

@@ -365,7 +365,7 @@ function reduceToSingleString(output, base, braces) {
     return prev + cur.length + 1;
   }, 0);
 
-  if (length > (require('readline').columns || 50)) {
+  if (length > 60) {
     return braces[0] +
            (base === '' ? '' : base + '\n ') +
            ' ' +

test/simple/test-module-load-list.js

@@ -78,13 +78,6 @@ if (!process.features.uv)  {
     case 'fs':
       expected = expected.concat([
         'NativeModule console',
-        'NativeModule readline',
-        'NativeModule tty',
-        'NativeModule tty_posix',
-        'NativeModule net_uv',
-        'NativeModule timers_uv',
-        'Binding timer_wrap',
-        'NativeModule _linklist',
       ]);
       break;
 
@@ -98,7 +91,6 @@ if (!process.features.uv)  {
         'Binding timer_wrap',
         'NativeModule _linklist',
         'Binding pipe_wrap',
-        'NativeModule readline'
       ]);
       break;
 
@@ -110,9 +102,6 @@ if (!process.features.uv)  {
         'Binding timer_wrap',
         'NativeModule _linklist',
         'Binding pipe_wrap',
-        'NativeModule readline',
-        'NativeModule tty',
-        'NativeModule tty_posix',
       ]);
       break;