cppreference.com > C++ Lists > remove remove Syntax:
      #include <list>
      void remove( const TYPE &val );
The function remove() removes all elements that are equal to val from the list. For example, the following code creates a list of the first 10 characters of the alphabet, then uses remove() to remove the letter 'E' from the list:
       // Create a list that has the first 10 letters of the alphabet
       list<char> charList;
       for( int i=0; i < 10; i++ )
         charList.push_front( i + 65 );
       // Remove all instances of 'E'
       charList.remove( 'E' );
Remove runs in linear time. Related topics: erase remove_if unique