Remove unused CSS, selectionElement

src/Interfaces.ts

@@ -19,7 +19,6 @@ export interface IBrowser {
 
 export interface ITerminal extends IEventEmitter {
   element: HTMLElement;
-  selectionContainer: HTMLElement;
   selectionManager: ISelectionManager;
   charMeasure: ICharMeasure;
   textarea: HTMLTextAreaElement;

src/Terminal.ts

@@ -97,7 +97,6 @@ export class Terminal extends EventEmitter implements ITerminal, IInputHandlingT
   private body: HTMLBodyElement;
   private viewportScrollArea: HTMLElement;
   private viewportElement: HTMLElement;
-  public selectionContainer: HTMLElement;
   private helperContainer: HTMLElement;
   private compositionView: HTMLElement;
   private charSizeStyleElement: HTMLStyleElement;
@@ -574,11 +573,6 @@ export class Terminal extends EventEmitter implements ITerminal, IInputHandlingT
     // preload audio
     this.syncBellSound();
 
-    // Create the selection container.
-    this.selectionContainer = document.createElement('div');
-    this.selectionContainer.classList.add('xterm-selection');
-    this.element.appendChild(this.selectionContainer);
-
     // TODO: Re-enable linkifier
     // this.linkifier.attachToDom(document, this.children);
 

src/Viewport.ts

@@ -57,7 +57,6 @@ export class Viewport implements IViewport {
       if (rowHeightChanged || viewportHeightChanged) {
         this.lastRecordedViewportHeight = this.terminal.rows;
         this.viewportElement.style.height = lineHeight * this.terminal.rows + 'px';
-        this.terminal.selectionContainer.style.height = this.viewportElement.style.height;
       }
       this.scrollArea.style.height = (lineHeight * this.lastRecordedBufferLength) + 'px';
     }