how to drop migration laravel code example

Example 1: drop column migration laravel

Class RemoveCommentViewCount extends Migration
  {
      public function up()
      {
          Schema::table('articles', function($table) {
             $table->dropColumn('comment_count');
             $table->dropColumn('view_count');
          });
      }

      public function down()
      {
          Schema::table('articles', function($table) {
             $table->integer('comment_count');
             $table->integer('view_count');
          });
      }
  }

Example 2: delete a migration laravel

// delete a migration safely from laravel 
delete migration from database/migrations/ directory
and also delete entry from migrations table