Hide empty autocomplete and remove word counter

src/components/views/rooms/Autocomplete.js

@@ -149,13 +149,13 @@ export default class Autocomplete extends React.Component {
                     {completionResult.provider.renderCompletions(completions)}
                 </div>
             ) : null;
-        });
+        }).filter(completion => !!completion);
 
-        return (
+        return renderedCompletions.length > 0 ? (
             <div className="mx_Autocomplete" ref={(e) => this.container = e}>
                 {renderedCompletions}
             </div>
-        );
+        ) : null;
     }
 }
 

src/components/views/rooms/MessageComposer.js

@@ -318,7 +318,6 @@ export default class MessageComposer extends React.Component {
                         <div className="mx_MessageComposer_formatbar" style={this.state.showFormatting ? {} : {display: 'none'}}>
                             {formatButtons}
                             <div style={{flex: 1}}></div>
-                            <strong>{this.state.inputState.wordCount}</strong>
                             <img title={`Turn Markdown ${this.state.inputState.isRichtextEnabled ? 'on' : 'off'}`}
                                  onClick={this.onToggleMarkdownClicked}
                                 className="mx_MessageComposer_formatbar_markdown"

src/components/views/rooms/MessageComposerInput.js

@@ -241,7 +241,6 @@ export default class MessageComposerInput extends React.Component {
         if (this.props.onInputStateChanged && nextState !== this.state) {
             const state = this.getSelectionInfo(nextState.editorState);
             state.isRichtextEnabled = nextState.isRichtextEnabled;
-            state.wordCount = nextState.editorState.getCurrentContent().getPlainText().split(' ').filter(w => !!w).length;
             this.props.onInputStateChanged(state);
         }
     }