Remove toInt() conversion as it's hardly required.

#KT-14789

libraries/stdlib/src/kotlin/util/KotlinVersion.kt

@@ -24,16 +24,6 @@ public class KotlinVersion(val major: Int, val minor: Int, val patch: Int) : Com
         return major shl 16 + minor shl 8 + patch
     }
 
-    /**
-     * Returns the integer representation of this version.
-     *
-     * Integer representations of two [KotlinVersion] instances can be compared,
-     * so that if `v1.toInt() > v2.toInt()` then `v1 > v2`.
-     *
-     * This value should not be persisted, as it can change between program runs.
-     */
-    public fun toInt(): Int = version
-
     /**
      * Returns the string representation of this version
      */

libraries/tools/binary-compatibility-validator/reference-public-api/kotlin-stdlib.txt

@@ -17,7 +17,6 @@ public final class kotlin/KotlinVersion : java/lang/Comparable {
 	public fun hashCode ()I
 	public final fun isAtLeast (II)Z
 	public final fun isAtLeast (III)Z
-	public final fun toInt ()I
 	public fun toString ()Ljava/lang/String;
 }