small refactor

src/nativeMain/kotlin/com/infendro/shell/Shell.native.kt

@@ -1,12 +1,10 @@
 package com.infendro.shell
 
 import kotlinx.cinterop.CPointer
-import kotlinx.cinterop.ExperimentalForeignApi
 import kotlinx.cinterop.refTo
 import kotlinx.cinterop.toKString
 import platform.posix.*
 
-@ExperimentalForeignApi
 internal actual suspend fun execute(
     command: Array<String>,
     directory: String?,
@@ -21,7 +19,6 @@ internal actual suspend fun execute(
     return Shell.Result(code, value)
 }
 
-@ExperimentalForeignApi
 private fun CPointer<FILE>.readLines(): List<String> {
     val lines = mutableListOf<String>()
     val buffer = ByteArray(4096)