chore: enable native firefox subtitles

CONTRIBUTORS.md

@@ -52,6 +52,7 @@
  - [MinecraftPlaye](https://github.com/MinecraftPlaye)
  - [Matthew Jones](https://github.com/matthew-jones-uk)
  - [taku0](https://github.com/taku0)
+ - [is343](https://github.com/is343)
 
 # Emby Contributors
 

src/plugins/htmlVideoPlayer/plugin.js

@@ -1150,8 +1150,7 @@ function tryRemoveElement(elem) {
                 return true;
             }
 
-            // This is unfortunate, but we're unable to remove the textTrack that gets added via addTextTrack
-            if (browser.firefox || browser.web0s) {
+            if (browser.web0s) {
                 return true;
             }