Further API conversion

sample/src/commonMain/kotlin/com/ionspin/kotlin/crypto/sample/Sample.kt

@@ -1,12 +1,8 @@
 package com.ionspin.kotlin.crypto.sample
 
 import com.ionspin.kotlin.crypto.Crypto
-import com.ionspin.kotlin.crypto.CryptoProvider
-import com.ionspin.kotlin.crypto.hash.blake2b.Blake2b
 import com.ionspin.kotlin.crypto.hash.encodeToUByteArray
 import com.ionspin.kotlin.crypto.util.toHexString
-import kotlinx.coroutines.GlobalScope
-import kotlinx.coroutines.launch
 
 object Sample {
     fun runSample() {
@@ -27,4 +23,4 @@ object Sample {
         val statelessResult = Crypto.Blake2b.stateless("test".encodeToByteArray().toUByteArray())
         println("Blake2b stateless: ${statelessResult.toHexString()}")
     }
-}
+}