Remove option forcing bindings to show up in SteamVR

Overlay applications show up in the bindings menu after SteamVR beta
1.3.1, making these features unnecessary.

src/main.cpp

@@ -16,8 +16,6 @@ int main( int argc, char* argv[] )
         argc, argv, argument::kInstallManifest );
     const bool removeManifest = argument::CheckCommandLineArgument(
         argc, argv, argument::kRemoveManifest );
-    const bool bindingsInterface = argument::CheckCommandLineArgument(
-        argc, argv, argument::kEnableBindingsInterface );
 
     // If a command line arg is set, make sure the logs reflect that.
     LOG_IF( desktopMode, INFO ) << "Desktop mode enabled.";
@@ -25,15 +23,6 @@ int main( int argc, char* argv[] )
     LOG_IF( noManifest, INFO ) << "vrmanifest disabled.";
     LOG_IF( installManifest, INFO ) << "Install manifest enabled.";
     LOG_IF( removeManifest, INFO ) << "Remove manifest enabled.";
-    LOG_IF( bindingsInterface, INFO ) << "Bindings interface enabled.";
-
-    if ( bindingsInterface )
-    {
-        // This is a temporary solution until Valve fixes overlays not
-        // showing up in the bindings interface. See function description for
-        // more info.
-        openvr_init::openBindingsMenu();
-    }
 
     // It is important that either install_manifest or remove_manifest are true,
     // otherwise the handleManifests function will not behave properly.