Switch to common kotlinx prebuilts

Android.bp

@@ -29,6 +29,8 @@ android_app {
         "androidx.preference_preference",
         "androidx.lifecycle_lifecycle-extensions",
         "androidx-constraintlayout_constraintlayout",
+        "kotlinx-coroutines-android",
+        "kotlinx-coroutines-core",
         "seedvault-lib-androidx-core-ktx",
         "seedvault-lib-androidx-lifecycle-livedata-core-ktx",
         "seedvault-lib-androidx-lifecycle-livedata-ktx",
@@ -37,8 +39,6 @@ android_app {
         "seedvault-lib-koin-androidx-viewmodel",
         "seedvault-lib-commons-io",
         "seedvault-lib-koin-core",
-        "seedvault-lib-kotlinx-coroutines-android",
-        "seedvault-lib-kotlinx-coroutines-core",
         "seedvault-lib-novacrypto-bip39",
         "seedvault-lib-novacrypto-sha256",
         "seedvault-lib-novacrypto-toruntime"

libs/Android.bp

@@ -48,20 +48,6 @@ java_import {
     sdk_version: "current",
 }
 
-java_import {
-    name: "seedvault-lib-kotlinx-coroutines-android",
-    host_supported: true,
-    jars: ["kotlinx-coroutines-android-1.1.1.jar"],
-    sdk_version: "current",
-}
-
-java_import {
-    name: "seedvault-lib-kotlinx-coroutines-core",
-    host_supported: true,
-    jars: ["kotlinx-coroutines-core-1.3.0.jar"],
-    sdk_version: "current",
-}
-
 java_import {
     name: "seedvault-lib-novacrypto-bip39",
     host_supported: true,