Remove some outdated browser checks

Also remove some type definitions that are definitely no longer needed
or were never correct.

src/js/application.js

@@ -79,9 +79,6 @@ export class Application {
         // Track if the window is visible
         this.pageVisible = true;
 
-        // Track if the app is paused (cordova)
-        this.applicationPaused = false;
-
         /** @type {TypedTrackedState<boolean>} */
         this.trackedIsRenderable = new TrackedState(this.onAppRenderableStateChanged, this);
 
@@ -232,7 +229,7 @@ export class Application {
      * Returns if the app is currently visible
      */
     isRenderable() {
-        return !this.applicationPaused && this.pageVisible;
+        return this.pageVisible;
     }
 
     onAppRenderableStateChanged(renderable) {

src/js/core/animation_frame.js

@@ -42,7 +42,6 @@ export class AnimationFrame {
     }
 
     start() {
-        assertAlways(window.requestAnimationFrame, "requestAnimationFrame is not supported!");
         this.handleAnimationFrame();
     }
 

src/js/states/preload.js

@@ -43,10 +43,6 @@ export class PreloadState extends GameState {
         this.startLoading();
     }
 
-    async sendBeacon() {
-        // TODO: Get rid of this analytics stuff
-    }
-
     onLeave() {
         // this.dialogs.cleanup();
     }
@@ -227,8 +223,6 @@ export class PreloadState extends GameState {
     showFailMessage(text) {
         logger.error("App init failed:", text);
 
-        const email = "bugs@shapez.io";
-
         const subElement = document.createElement("div");
         subElement.classList.add("failureBox");