[ios] Removed deprecated JS execution API.

ios/web/public/web_state/js/crw_js_injection_evaluator.h

Index: ios/web/public/web_state/js/crw_js_injection_evaluator.h
diff --git a/ios/web/public/web_state/js/crw_js_injection_evaluator.h b/ios/web/public/web_state/js/crw_js_injection_evaluator.h
index 17d2c4fe8b71905e894171ae6b4b2baa07fe832a..6bbd08da0c872e6e7920155be3f92c7f6ea40de6 100644
--- a/ios/web/public/web_state/js/crw_js_injection_evaluator.h
+++ b/ios/web/public/web_state/js/crw_js_injection_evaluator.h
@@ -11,14 +11,6 @@
 
 @protocol CRWJSInjectionEvaluator
 
-// Evaluates the supplied JavaScript in the WebView. Calls |completionHandler|
-// with results of the evaluation (which may be nil if the implementing object
-// has no way to run the evaluation or the evaluation returns a nil value)
-// or an NSError if there is an error. The |completionHandler| can be nil.
-// TODO(crbug.com/595761): Change this API to return |id| instead of string.
-- (void)evaluateJavaScript:(NSString*)script
-       stringResultHandler:(web::JavaScriptCompletion)handler;
-
 // Executes the supplied JavaScript in the WebView. Calls |completionHandler|
 // with results of the execution (which may be nil if the implementing object
 // has no way to run the execution or the execution returns a nil value)