keyremapping: Remove vestigial LOGIN_SCREEN guard clause

Key remaps have been blocked at the KeyManager level as of commit
01bdbe5aab, so a LOGIN_SCREEN game state
check is no longer needed within individual KeyListeners.

runelite-client/src/test/java/net/runelite/client/plugins/keyremapping/KeyRemappingListenerTest.java

@@ -30,7 +30,6 @@ import com.google.inject.testing.fieldbinder.BoundFieldModule;
 import java.awt.event.KeyEvent;
 import javax.inject.Inject;
 import net.runelite.api.Client;
-import net.runelite.api.GameState;
 import net.runelite.client.config.ModifierlessKeybind;
 import org.junit.Before;
 import org.junit.Test;
@@ -64,8 +63,6 @@ public class KeyRemappingListenerTest
 	public void setUp()
 	{
 		Guice.createInjector(BoundFieldModule.of(this)).injectMembers(this);
-
-		when(client.getGameState()).thenReturn(GameState.LOGGED_IN);
 	}
 
 	@Test