ref(conn-indicator): remove E2E RTT (#12139)

There was a fundamental change in how e2e pings work in lib-jitsi-meet where it does few pings at the beginning, pushes metrics and shuts the whole thing down, so there are no more e2ertt updates after that. Plus it's disabled by default. @paweldomas have decided with @bgrozev to remove that instead of trying to adjust. Even if e2e pings are enabled the data is not feed correctly to the indicators, what's wrong there is as soon as the pings stop going the new data does not arrive and then all you get is N/A if the UI component is recreated.

react/features/connection-indicator/components/web/ConnectionIndicatorContent.js

@@ -194,7 +194,6 @@ class ConnectionIndicatorContent extends AbstractConnectionIndicator<Props, Stat
             bitrate,
             bridgeCount,
             codec,
-            e2eRtt,
             framerate,
             maxEnabledResolution,
             packetLoss,
@@ -212,7 +211,6 @@ class ConnectionIndicatorContent extends AbstractConnectionIndicator<Props, Stat
                 codec = { codec }
                 connectionSummary = { this._getConnectionStatusTip() }
                 disableShowMoreStats = { this.props._disableShowMoreStats }
-                e2eRtt = { e2eRtt }
                 enableSaveLogs = { this.props._enableSaveLogs }
                 framerate = { framerate }
                 isLocalVideo = { this.props._isLocalVideo }