Remove unused functions

Author: 10gic

kotlin/wallet-core-kotlin/src/iosMain/kotlin/com/trustwallet/core/AnySigner.kt

@@ -10,7 +10,7 @@ actual object AnySigner {
 
     actual fun sign(input: ByteArray, coin: CoinType): ByteArray {
         val inputData = TWDataCreateWithBytes(input.toUByteArray().toCValues(), input.size.toULong())
-        val result = TWAnySignerSign(input.toTwData(), coin.value)!!.readTwBytes()!!
+        val result = TWAnySignerSign(inputData, coin.value)!!.readTwBytes()!!
         TWDataDelete(inputData)
         return result
     }
@@ -29,7 +29,7 @@ actual object AnySigner {
 
     actual fun plan(input: ByteArray, coin: CoinType): ByteArray {
         val inputData = TWDataCreateWithBytes(input.toUByteArray().toCValues(), input.size.toULong())
-        val result = TWAnySignerPlan(input.toTwData(), coin.value)?.readTwBytes()!!
+        val result = TWAnySignerPlan(inputData, coin.value)?.readTwBytes()!!
         TWDataDelete(inputData)
         return result
     }

kotlin/wallet-core-kotlin/src/iosMain/kotlin/com/trustwallet/core/ByteArrayExt.kt

@@ -15,7 +15,3 @@ internal fun COpaquePointer?.readTwBytes(): ByteArray? =
         TWDataDelete(it)
         result
     }
-
-@OptIn(ExperimentalUnsignedTypes::class)
-internal fun ByteArray?.toTwData(): COpaquePointer? =
-    TWDataCreateWithBytes(this?.toUByteArray()?.toCValues(), this?.size?.toULong() ?: 0u)

kotlin/wallet-core-kotlin/src/iosMain/kotlin/com/trustwallet/core/StringExt.kt

@@ -4,13 +4,9 @@
 
 package com.trustwallet.core
 
-import kotlinx.cinterop.COpaquePointer
 import kotlinx.cinterop.CValuesRef
 import kotlinx.cinterop.toKString
 
-internal fun String?.toTwString(): COpaquePointer? =
-    this?.let { TWStringCreateWithUTF8Bytes(it) }
-
 // Build String from TWString, and then delete TWString
 internal fun CValuesRef<*>?.fromTwString(): String? =
     this?.let {