Eliminated an "external inline" function from stdlib.

runtime/src/main/kotlin/kotlin/text/Char.kt

@@ -51,8 +51,7 @@ external public fun Char.isIdentifierIgnorable(): Boolean
  * Returns `true` if this character is an ISO control character.
  */
 @SymbolName("Kotlin_Char_isISOControl")
-@Suppress("NOTHING_TO_INLINE")
-external public inline fun Char.isISOControl(): Boolean
+external public fun Char.isISOControl(): Boolean
 
 /**
  * Determines whether a character is whitespace according to the Unicode standard.