[ui/public/utils] Delete unused base_object & find_by_param

Closes #51854

src/legacy/ui/public/state_management/state.js

@@ -316,6 +316,27 @@ export function StateProvider(Private, $rootScope, $location, stateManagementCon
     return this._urlParam;
   };
 
+  /**
+   * Returns an object with each property name and value corresponding to the entries in this collection
+   * excluding fields started from '$', '_' and all methods
+   *
+   * @return {object}
+   */
+  State.prototype.toObject = function () {
+    return _.omit(this, (value, key) => {
+      return key.charAt(0) === '$' || key.charAt(0) === '_' || _.isFunction(value);
+    });
+  };
+
+  /** Alias for method 'toObject'
+   *
+   * @obsolete Please use 'toObject' method instead
+   * @return {object}
+   */
+  State.prototype.toJSON = function () {
+    return this.toObject();
+  };
+
   return State;
 
 }

src/legacy/ui/public/utils/simple_emitter.js

@@ -18,16 +18,13 @@
  */
 
 import _ from 'lodash';
-import { BaseObject } from './base_object';
-import { createLegacyClass } from './legacy_class';
 
 /**
  * Simple event emitter class used in the vislib. Calls
  * handlers synchronously and implements a chainable api
  *
  * @class
  */
-createLegacyClass(SimpleEmitter).inherits(BaseObject);
 export function SimpleEmitter() {
   this._listeners = {};
 }
@@ -134,4 +131,3 @@ SimpleEmitter.prototype.listenerCount = function (name) {
     return count + _.size(handlers);
   }, 0);
 };
-