Remove superfluous import

Author: simolus3

core/src/commonTest/kotlin/com/powersync/testutils/MockSyncService.kt

@@ -22,7 +22,6 @@ import io.ktor.utils.io.writer
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.channels.ReceiveChannel
 import kotlinx.coroutines.channels.consume
-import kotlinx.coroutines.channels.consumeEach
 import kotlinx.serialization.encodeToString
 
 /**