Fix UnusedPrivateProperty errors

components/rc_log/android/src/test/java/mozilla/appservices/rustlog/LogTest.kt

@@ -72,7 +72,7 @@ class LogTest {
         assertEquals(logs.size, 3)
         assert(!wasCalled)
 
-        for (i in 0..15) {
+        repeat(15) {
             Thread.sleep(10)
             @Suppress("ExplicitGarbageCollectionCall")
             System.gc()
@@ -167,7 +167,7 @@ class LogTest {
         RustLogAdapter.disable()
 
         // Make sure the GC can now collect the background threads.
-        for (i in 0..15) {
+        repeat(15) {
             Thread.sleep(10)
             @Suppress("ExplicitGarbageCollectionCall")
             System.gc()

components/support/nimbus-fml/test/threadsafe_feature_holder.kts

@@ -22,12 +22,12 @@ class Feature(val string: String): FMLFeatureInterface {
 
 val holder = FeatureHolder<Feature>({ api }, featureId = "test-feature-holder") { Feature("NO CRASH") }
 
-for (i in 0..10000) {
+repeat(10000) {
     scope.submit {
         holder.value()
     }
 }
-for (i in 0..2000) {
+repeat(2000) {
     scope.submit {
         holder.value()
     }