Remove @ObsoleteCoroutinesApi from TestCore

app/src/test/java/org/mozilla/fenix/TestApplication.kt

@@ -4,10 +4,8 @@
 
 package org.mozilla.fenix
 
-import kotlinx.coroutines.ObsoleteCoroutinesApi
 import org.mozilla.fenix.components.TestComponents
 
-@ObsoleteCoroutinesApi
 class TestApplication : FenixApplication() {
 
     override val components = TestComponents(this)

app/src/test/java/org/mozilla/fenix/components/TestComponents.kt

@@ -6,12 +6,10 @@ package org.mozilla.fenix.components
 
 import android.content.Context
 import io.mockk.mockk
-import kotlinx.coroutines.ObsoleteCoroutinesApi
 import mozilla.components.support.test.mock
 import org.mockito.Mockito.`when`
 import org.mozilla.fenix.utils.ClipboardHandler
 
-@ObsoleteCoroutinesApi
 class TestComponents(private val context: Context) : Components(context) {
     override val backgroundServices by lazy {
         mockk<BackgroundServices>(relaxed = true)

app/src/test/java/org/mozilla/fenix/components/TestCore.kt

@@ -6,14 +6,12 @@ package org.mozilla.fenix.components
 
 import android.content.Context
 import io.mockk.mockk
-import kotlinx.coroutines.ObsoleteCoroutinesApi
 import mozilla.components.browser.engine.gecko.GeckoEngine
 import mozilla.components.browser.session.SessionManager
 import mozilla.components.browser.state.store.BrowserStore
 import mozilla.components.concept.fetch.Client
 
-@ObsoleteCoroutinesApi
-class TestCore(private val context: Context) : Core(context) {
+class TestCore(context: Context) : Core(context) {
 
     override val engine = mockk<GeckoEngine>(relaxed = true)
     override val sessionManager = SessionManager(engine)