Remove JSONP support

CORS is now widely supported and should be used instead for cross-domain
requests.

Issue: SPR-16914

src/docs/asciidoc/web/webmvc-view.adoc

@@ -2030,11 +2030,6 @@ annotations. When further control is needed, a custom `ObjectMapper` can be inje
 through the `ObjectMapper` property for cases where custom JSON
 serializers/deserializers need to be provided for specific types.
 
-http://en.wikipedia.org/wiki/JSONP[JSONP] is supported and automatically enabled when
-the request has a query parameter named `jsonp` or `callback`. The JSONP query parameter
-name(s) could be customized through the `jsonpParameterNames` property.
-
-
 
 [[mvc-view-xml-mapping]]
 === XML

src/docs/asciidoc/web/webmvc.adoc

@@ -2645,30 +2645,6 @@ to the model:
 	}
 ----
 
-[[mvc-ann-jsonp]]
-===== Jackson JSONP
-
-In order to enable http://en.wikipedia.org/wiki/JSONP[JSONP] support for `@ResponseBody`
-and `ResponseEntity` methods, declare an `@ControllerAdvice` bean that extends
-`AbstractJsonpResponseBodyAdvice` as shown below where the constructor argument indicates
-the JSONP query parameter name(s):
-
-[source,java,indent=0]
-[subs="verbatim,quotes"]
-----
-	@ControllerAdvice
-	public class JsonpAdvice extends AbstractJsonpResponseBodyAdvice {
-
-		public JsonpAdvice() {
-			super("callback");
-		}
-	}
-----
-
-For controllers relying on view resolution, JSONP is automatically enabled when the
-request has a query parameter named `jsonp` or `callback`. Those names can be
-customized through `jsonpParameterNames` property.
-
 
 
 [[mvc-ann-modelattrib-methods]]

src/docs/asciidoc/web/websocket.adoc

@@ -401,8 +401,8 @@ The 3 possible behaviors are:
    transport is disabled since it does not allow to check the origin of a request.
    As a consequence, IE6 and IE7 are not supported when this mode is enabled.
  * Allow a specified list of origins: each provided _allowed origin_ must start with `http://`
-   or `https://`. In this mode, when SockJS is enabled, both IFrame and JSONP based
-   transports are disabled. As a consequence, IE6 through IE9 are not supported when this
+   or `https://`. In this mode, when SockJS is enabled, IFrame transport is disabled.
+   As a consequence, IE6 through IE9 are not supported when this
    mode is enabled.
  * Allow all origins: to enable this mode, you should provide `{asterisk}` as the allowed origin
    value. In this mode, all transports are available.