Remove the common var AbstractMutableList<*>.modCount: Int declaration

In Kotlin 2.0 it is provided by stdlib. See KT-57150.

Author: Abduqodiri Qurbonzoda

core/commonMain/src/implementations/immutableList/PersistentVectorBuilder.kt

@@ -10,7 +10,6 @@ import kotlinx.collections.immutable.internal.ListImplementation.checkElementInd
 import kotlinx.collections.immutable.internal.ListImplementation.checkPositionIndex
 import kotlinx.collections.immutable.internal.MutabilityOwnership
 import kotlinx.collections.immutable.internal.assert
-import kotlinx.collections.immutable.internal.modCount
 
 internal class PersistentVectorBuilder<E>(vector: PersistentList<E>,
                                           vectorRoot: Array<Any?>?,

core/commonMain/src/internal/commonFunctions.kt

@@ -6,6 +6,3 @@
 package kotlinx.collections.immutable.internal
 
 internal expect fun assert(condition: Boolean)
-
-@Suppress("NO_ACTUAL_FOR_EXPECT") // implemented by protected property in JVM
-internal expect var AbstractMutableList<*>.modCount: Int

core/jsMain/src/internal/commonFunctions.kt

@@ -10,7 +10,3 @@ internal actual fun assert(condition: Boolean) {
         throw AssertionError("Assertion failed")
     }
 }
-
-internal actual var AbstractMutableList<*>.modCount: Int
-    get() = 0
-    set(@Suppress("UNUSED_PARAMETER") value) {}

core/nativeMain/src/internal/commonFunctions.kt

@@ -7,8 +7,3 @@ package kotlinx.collections.immutable.internal
 
 @OptIn(kotlin.experimental.ExperimentalNativeApi::class)
 internal actual fun assert(condition: Boolean) = kotlin.assert(condition)
-
-
-internal actual var AbstractMutableList<*>.modCount: Int
-    get() = 0
-    set(@Suppress("UNUSED_PARAMETER") value) {}

core/wasmMain/src/internal/commonFunctions.kt

@@ -10,7 +10,3 @@ internal actual fun assert(condition: Boolean) {
         throw AssertionError("Assertion failed")
     }
 }
-
-internal actual var AbstractMutableList<*>.modCount: Int
-    get() = 0
-    set(@Suppress("UNUSED_PARAMETER") value) {}