Revert "Implemented *Array.toString() for all arrays"

This reverts commit 7997b4f362.
Synchorinization with Kotlin/JVM - default implementation will do.

runtime/src/main/kotlin/kotlin/Array.kt

@@ -47,10 +47,6 @@ public final class Array<T> {
         return IteratorImpl(this)
     }
 
-    public override fun toString(): String {
-        return this.joinToString(separator = ", ", prefix = "[", postfix = "]")
-    }
-
     // Konan-specific.
     @SymbolName("Kotlin_Array_getArrayLength")
     external private fun getArrayLength(): Int

runtime/src/main/kotlin/kotlin/Arrays.kt

@@ -64,10 +64,6 @@ public final class ByteArray {
     public operator fun iterator(): ByteIterator {
         return ByteIteratorImpl(this)
     }
-
-    public override fun toString(): String {
-        return this.joinToString(separator = ", ", prefix = "[", postfix = "]")
-    }
 }
 
 // TODO: replace with generics, once implemented.
@@ -120,10 +116,6 @@ public final class CharArray {
     public operator fun iterator(): kotlin.collections.CharIterator {
         return CharIteratorImpl(this)
     }
-
-    public override fun toString(): String {
-        return this.joinToString(separator = ", ", prefix = "[", postfix = "]")
-    }
 }
 
 private class CharIteratorImpl(val collection: CharArray) : CharIterator() {
@@ -175,10 +167,6 @@ public final class ShortArray {
     public operator fun iterator(): kotlin.collections.ShortIterator {
         return ShortIteratorImpl(this)
     }
-
-    public override fun toString(): String {
-        return this.joinToString(separator = ", ", prefix = "[", postfix = "]")
-    }
 }
 
 private class ShortIteratorImpl(val collection: ShortArray) : ShortIterator() {
@@ -230,10 +218,6 @@ public final class IntArray {
     public operator fun iterator(): kotlin.collections.IntIterator {
         return IntIteratorImpl(this)
     }
-
-    public override fun toString(): String {
-        return this.joinToString(separator = ", ", prefix = "[", postfix = "]")
-    }
 }
 
 private class IntIteratorImpl(val collection: IntArray) : IntIterator() {
@@ -285,10 +269,6 @@ public final class LongArray {
     public operator fun iterator(): kotlin.collections.LongIterator {
         return LongIteratorImpl(this)
     }
-
-    public override fun toString(): String {
-        return this.joinToString(separator = ", ", prefix = "[", postfix = "]")
-    }
 }
 
 private class LongIteratorImpl(val collection: LongArray) : LongIterator() {
@@ -340,10 +320,6 @@ public final class FloatArray {
     public operator fun iterator(): kotlin.collections.FloatIterator {
         return FloatIteratorImpl(this)
     }
-
-    public override fun toString(): String {
-        return this.joinToString(separator = ", ", prefix = "[", postfix = "]")
-    }
 }
 
 private class FloatIteratorImpl(val collection: FloatArray) : FloatIterator() {
@@ -391,10 +367,6 @@ public final class DoubleArray {
     public operator fun iterator(): kotlin.collections.DoubleIterator {
         return DoubleIteratorImpl(this)
     }
-
-    public override fun toString(): String {
-        return this.joinToString(separator = ", ", prefix = "[", postfix = "]")
-    }
 }
 
 private class DoubleIteratorImpl(val collection: DoubleArray) : DoubleIterator() {
@@ -442,10 +414,6 @@ public final class BooleanArray {
     public operator fun iterator(): kotlin.collections.BooleanIterator {
         return BooleanIteratorImpl(this)
     }
-
-    public override fun toString(): String {
-        return this.joinToString(separator = ", ", prefix = "[", postfix = "]")
-    }
 }
 
 private class BooleanIteratorImpl(val collection: BooleanArray) : BooleanIterator() {