Platform and version requirements: JVM (1.0), JS (1.1), Native (1.3)

abstract fun removeAt(index: Int): E

For JVM

Removes an element at the specified index from the list.

This method is redeclared as abstract, because it's not implemented in the base class, so it must be always overridden in the concrete mutable collection implementation.

Return the element that has been removed.

For JS, Native

Removes an element at the specified index from the list.

Return the element that has been removed.