bindings: Removes unnecessary Event-related code.

Source/bindings/modules/BUILD.gn

Index: Source/bindings/modules/BUILD.gn
diff --git a/Source/bindings/modules/BUILD.gn b/Source/bindings/modules/BUILD.gn
index f5a10d7c039c3826a7e2aa9b3c8dd9b6658891e1..c1ef754ebcc5a271fa05bff343730cc8934c3021 100644
--- a/Source/bindings/modules/BUILD.gn
+++ b/Source/bindings/modules/BUILD.gn
@@ -16,7 +16,6 @@ group("bindings_modules_generated") {
     ":modules_bindings_generated_event_interfaces",
     ":bindings_modules_generated_event_modules_factory",
     ":bindings_modules_generated_event_modules_names",
-    ":bindings_modules_generated_event_target_modules_factory",
     ":bindings_modules_generated_event_target_modules_names",
   ]
 }
@@ -36,7 +35,6 @@ make_event_factory("bindings_modules_generated_event_modules_factory") {
   outputs = [
     "$blink_modules_output_dir/EventModules.cpp",
     "$blink_modules_output_dir/EventModulesHeaders.h",
-    "$blink_modules_output_dir/EventModulesInterfaces.h",
   ]
 }
 
@@ -51,17 +49,6 @@ make_names("bindings_modules_generated_event_modules_names") {
   ]
 }
 
-# GYP version: EventTargetModulesFactory action in bindings_modules_generated
-make_event_factory("bindings_modules_generated_event_target_modules_factory") {
-  in_files = [
-    "../../modules/EventTargetModulesFactory.in",
-  ]
-  outputs = [
-    "$blink_modules_output_dir/EventTargetModulesHeaders.h",
-    "$blink_modules_output_dir/EventTargetModulesInterfaces.h",
-  ]
-}
-
 # GYP version: EventTargetModulesNames action in bindings_modules_generated
 make_names("bindings_modules_generated_event_target_modules_names") {
   in_files = [
@@ -116,5 +103,3 @@ action("interfaces_info") {
     "//third_party/WebKit/Source/bindings/core:interfaces_info_individual_core",
   ]
 }
-
-