Revert the previous fix for apostrophes

It doesn't cover all the cases. There's a simpler and better fix.

This reverts commit 803a814025.

src/RichTextEditor.js

           }
           this.setTitlePlaceholder(this.props.titlePlaceholder);
           this.setContentPlaceholder(this.props.contentPlaceholder);
-          this.setTitleHTML(this.htmlEcodeString(this.props.initialTitleHTML));
-          this.setContentHTML(this.htmlEcodeString(this.props.initialContentHTML));
+          this.setTitleHTML(this.props.initialTitleHTML);
+          this.setContentHTML(this.props.initialContentHTML);
           this.props.editorInitializedCallback && this.props.editorInitializedCallback();
 
           break;
       .replace(/[\t]/g, '\\t');
   };
 
-  htmlEcodeString = function (string) {
-    //for some reason there's an issue only with apostrophes
-    return string
-      .replace(/'/g, ''');
-  }
-
   _sendAction(action, data) {
     let jsonString = JSON.stringify({type: action, data});
     jsonString = this.escapeJSONString(jsonString);
   }
 
   insertLink(url, title) {
-    this._sendAction(actions.insertLink, {url, title: this.htmlEcodeString(title)});
+
+    this._sendAction(actions.insertLink, {url, title});
   }
 
   insertImage(url, alt) {