Analysis: Resolve deprecated coroutines thread module scope warnings

Warning Messages: "'UI/DEFAULT_SCOPE: String' is deprecated. Implement
CoroutineScope interface and cancel all child coroutines in
onCleared/onDestroy/.."ª

It seems that both, the deprecated named 'UI_SCOPE' and 'DEFAULT_SCOPE'
coroutine scopes, that are being provided by the [ThreadModule] module,
are no longer being utilized within this codebase and thus, they can be
now safely removed. There was no need for any migration either.

Author: ParaskP7

WordPress/src/main/java/org/wordpress/android/modules/ThreadModule.kt

@@ -10,10 +10,6 @@ import kotlinx.coroutines.Dispatchers
 import org.wordpress.android.util.helpers.Debouncer
 import javax.inject.Named
 
-@Deprecated(message = "Implement CoroutineScope interface and cancel all child coroutines in onCleared/onDestroy/..")
-const val UI_SCOPE = "UI_SCOPE"
-@Deprecated(message = "Implement CoroutineScope interface and cancel all child coroutines in onCleared/onDestroy/..")
-const val DEFAULT_SCOPE = "DEFAULT_SCOPE"
 const val APPLICATION_SCOPE = "APPLICATION_SCOPE"
 const val UI_THREAD = "UI_THREAD"
 const val BG_THREAD = "BG_THREAD"
@@ -22,28 +18,12 @@ const val IO_THREAD = "IO_THREAD"
 @InstallIn(SingletonComponent::class)
 @Module
 class ThreadModule {
-    @Provides
-    @Named(UI_SCOPE)
-    fun provideUiScope(): CoroutineScope {
-        return CoroutineScope(Dispatchers.Main)
-    }
-
     @Provides
     @Named(UI_THREAD)
     fun provideUiDispatcher(): CoroutineDispatcher {
         return Dispatchers.Main
     }
 
-    @Provides
-    @Named(DEFAULT_SCOPE)
-    @Deprecated(
-            message = "CoroutineScope should be provided by an object which implements CoroutineScope",
-            replaceWith = ReplaceWith("Inject dispatcher and implement CoroutineScope interface")
-    )
-    fun provideBackgroundScope(): CoroutineScope {
-        return CoroutineScope(Dispatchers.Default)
-    }
-
     @Provides
     @Named(APPLICATION_SCOPE)
     fun provideApplicationScope(): CoroutineScope {