Remove custom hashCode and equals from unsigned types

The generated ones are ok now (on JVM)

libraries/stdlib/unsigned/src/kotlin/UByte.kt

@@ -138,11 +138,6 @@ public inline class UByte internal constructor(private val data: Byte) : Compara
 
     public override fun toString(): String = toInt().toString()
 
-    public override fun hashCode(): Int = toInt()
-
-    public override fun equals(other: Any?): Boolean =
-        other is UByte && this.data == other.data
-
 }
 
 @SinceKotlin("1.3")