[Docs]: indent rules are no longer needed with newer eslint

Author: chiawendt

docs/rules/jsx-indent-props.md

@@ -105,3 +105,5 @@ firstName="John"
 ## When not to use
 
 If you are not using JSX then you can disable this rule.
+
+If you have enabled the core rule `indent` with eslint >= 4, you don't need this rule.

docs/rules/jsx-indent.md

@@ -111,3 +111,5 @@ The following patterns are **not** warnings:
 ## When not to use
 
 If you are not using JSX then you can disable this rule.
+
+If you have enabled the core rule `indent` with eslint >= 3, you don't need this rule.

docs/rules/jsx-props-no-multi-spaces.md

@@ -29,3 +29,5 @@ The following patterns are **not** considered warnings:
 ## When Not To Use It
 
 If you are not using JSX or don't care about the space between two props in the same line.
+
+If you have enabled the core rule `no-multi-spaces` with eslint >= 3, you don't need this rule.