Remove unused import.

Author: TadeasKriz

android/src/main/java/co/touchlab/droidcon/android/MainActivity.kt

@@ -26,7 +26,6 @@ import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.unit.dp
 import androidx.core.content.ContextCompat
 import androidx.core.splashscreen.SplashScreen.Companion.installSplashScreen
-import androidx.core.view.WindowCompat
 import androidx.lifecycle.lifecycleScope
 import co.touchlab.droidcon.application.service.NotificationSchedulingService
 import co.touchlab.droidcon.domain.service.AnalyticsService