Remove obsolete API level checks

icons/src/main/java/de/mm20/launcher2/icons/ClockDynamicLauncherIcon.kt

@@ -10,7 +10,6 @@ import androidx.annotation.RequiresApi
 import java.util.*
 import kotlin.math.roundToInt
 
-@RequiresApi(Build.VERSION_CODES.O)
 class ClockDynamicLauncherIcon(
     foreground: LayerDrawable,
     background: Drawable?,

icons/src/main/java/de/mm20/launcher2/icons/providers/GoogleClockIconProvider.kt

@@ -14,7 +14,6 @@ import de.mm20.launcher2.search.data.Searchable
 
 class GoogleClockIconProvider(val context: Context) : IconProvider {
     override suspend fun getIcon(searchable: Searchable, size: Int): LauncherIcon? {
-        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) return null
         if (searchable !is Application) return null
         if (searchable.`package` != "com.google.android.deskclock") return null
         val pm = context.packageManager

icons/src/main/java/de/mm20/launcher2/icons/providers/IconPackIconProvider.kt

@@ -48,7 +48,7 @@ class IconPackIconProvider(
             ?: return generateIcon(context, searchable.launcherActivityInfo, size)
         val drawable = ResourcesCompat.getDrawable(res, resId, context.theme) ?: return null
         return when {
-            Build.VERSION.SDK_INT >= Build.VERSION_CODES.O && drawable is AdaptiveIconDrawable -> {
+            drawable is AdaptiveIconDrawable -> {
                 LauncherIcon(
                     foreground = drawable.foreground,
                     background = drawable.background,

icons/src/main/java/de/mm20/launcher2/icons/providers/ThemedIconProvider.kt

@@ -81,9 +81,6 @@ class ThemedIconProvider(
     }
 
     private fun getClockIcon(resources: Resources, resId: Int): LauncherIcon? {
-        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) {
-            return null
-        }
         try {
             val array = resources.obtainTypedArrayOrNull(resId) ?: return null
             var i = 0