fix: remove forked indent rule (silvermine#41)

The reason for forking the indent rule was to allow us to line up
variable declarations. The original indent rule only allowed doing this
if you used 2 or 4 space indent. The new eslint rule has a setting to
require variable declarations to line up, so this rule is no longer
needed. In fact, our own config now uses the default rule.

lib/index.js

@@ -17,8 +17,7 @@ var fluentChaining = require('./rules/fluent-chaining'),
     modulesOnly = require('./rules/module-files-only'),
     blockScopeCase = require('./rules/block-scope-case'),
     braceStyle = require('./rules/brace-style'),
-    maxStatementsPerLine = require('./rules/max-statements-per-line'),
-    indent = require('./rules/indent');
+    maxStatementsPerLine = require('./rules/max-statements-per-line');
 
 module.exports.rules = {
    'fluent-chaining': fluentChaining,
@@ -27,7 +26,6 @@ module.exports.rules = {
    'no-multiple-inline-functions': noMultipleInlineFunctions,
    'no-multiline-var-declarations': noMultilineVarDeclaration,
    'brace-style': braceStyle,
-   'indent': indent,
    'no-multiline-conditionals': noMultilineConditionals,
    'empty-object-spacing': emptyObjectSpacing,
    'empty-array-spacing': emptyArraySpacing,