diff --git a/devtools/client/responsive/components/Viewports.js b/devtools/client/responsive/components/Viewports.js
deleted file mode 100644
index 8ed1ed31f11b..000000000000
--- a/devtools/client/responsive/components/Viewports.js
+++ /dev/null
@@ -1,100 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-"use strict";
-
-const {
-  createFactory,
-  PureComponent,
-} = require("devtools/client/shared/vendor/react");
-const dom = require("devtools/client/shared/vendor/react-dom-factories");
-const PropTypes = require("devtools/client/shared/vendor/react-prop-types");
-const { connect } = require("devtools/client/shared/vendor/react-redux");
-
-const ResizableViewport = createFactory(
-  require("devtools/client/responsive/components/ResizableViewport")
-);
-
-const Types = require("devtools/client/responsive/types");
-
-class Viewports extends PureComponent {
-  static get propTypes() {
-    return {
-      leftAlignmentEnabled: PropTypes.bool.isRequired,
-      onBrowserMounted: PropTypes.func.isRequired,
-      onContentResize: PropTypes.func.isRequired,
-      onRemoveDeviceAssociation: PropTypes.func.isRequired,
-      doResizeViewport: PropTypes.func.isRequired,
-      onResizeViewport: PropTypes.func.isRequired,
-      screenshot: PropTypes.shape(Types.screenshot).isRequired,
-      viewports: PropTypes.arrayOf(PropTypes.shape(Types.viewport)).isRequired,
-    };
-  }
-
-  render() {
-    const {
-      leftAlignmentEnabled,
-      onBrowserMounted,
-      onContentResize,
-      onRemoveDeviceAssociation,
-      doResizeViewport,
-      onResizeViewport,
-      screenshot,
-      viewports,
-    } = this.props;
-
-    const viewportSize = window.getViewportSize();
-    // The viewport may not have been created yet. Default to justify-content: center
-    // for the container.
-    let justifyContent = "center";
-
-    // If the RDM viewport is bigger than the window's inner width, set the container's
-    // justify-content to start so that the left-most viewport is visible when there's
-    // horizontal overflow. That is when the horizontal space become smaller than the
-    // viewports and a scrollbar appears, then the first viewport will still be visible.
-    if (
-      leftAlignmentEnabled ||
-      (viewportSize && viewportSize.width > window.innerWidth)
-    ) {
-      justifyContent = "start";
-    }
-
-    return dom.div(
-      {
-        id: "viewports-container",
-        style: {
-          justifyContent,
-        },
-      },
-      dom.div(
-        {
-          id: "viewports",
-          className: leftAlignmentEnabled ? "left-aligned" : "",
-        },
-        viewports.map((viewport, i) => {
-          return ResizableViewport({
-            key: viewport.id,
-            leftAlignmentEnabled,
-            onBrowserMounted,
-            onContentResize,
-            onRemoveDeviceAssociation,
-            doResizeViewport,
-            onResizeViewport,
-            screenshot,
-            swapAfterMount: i == 0,
-            viewport,
-          });
-        })
-      )
-    );
-  }
-}
-
-const mapStateToProps = state => {
-  return {
-    leftAlignmentEnabled: state.ui.leftAlignmentEnabled,
-  };
-};
-
-module.exports = connect(mapStateToProps)(Viewports);
diff --git a/devtools/client/responsive/components/moz.build b/devtools/client/responsive/components/moz.build
index dfbda220f5cf..a3f8a6471051 100644
--- a/devtools/client/responsive/components/moz.build
+++ b/devtools/client/responsive/components/moz.build
@@ -19,5 +19,4 @@ DevToolsModules(
     'Toolbar.js',
     'UserAgentInput.js',
     'ViewportDimension.js',
-    'Viewports.js',
 )
diff --git a/devtools/client/responsive/index.css b/devtools/client/responsive/index.css
index 873b43bae27b..76ed0feddddc 100644
--- a/devtools/client/responsive/index.css
+++ b/devtools/client/responsive/index.css
@@ -295,28 +295,6 @@ input:-moz-focusring {
   fill: var(--theme-icon-dimmed-color);
 }
 
-#viewports-container {
-  display: flex;
-  overflow: auto;
-  height: 100%;
-  width: 100%;
-}
-
-.theme-light #viewports-container {
-  background-color: #F5F5F6;
-}
-
-#viewports {
-  /* Individual viewports are inline elements, make sure they stay on a single
-     line */
-  white-space: nowrap;
-  margin-top: 16px;
-}
-
-#viewports.left-aligned {
-  margin-left: 16px;
-}
-
 /**
  * Viewport Container
  */