Remove enclosing brackets for method name at `BaseFieldDescription::getFieldValue()`
Remove enclosing brackets for method name at `BaseFieldDescription::getFieldValue()`

Co-Authored-By: phansys <99ba32a737922191384f123725ecbf1a6c754ca3@gmail.com>
osavchenko/SonataAdminBundle,greg0ire/SonataAdminBundle,sonata-project/SonataAdminBundle,jordisala1991/SonataAdminBundle,ARTACK/SonataAdminBundle,osavchenko/SonataAdminBundle,sonata-project/SonataAdminBundle,jordisala1991/SonataAdminBundle,osavchenko/SonataAdminBundle,greg0ire/SonataAdminBundle,jordisala1991/SonataAdminBundle,osavchenko/SonataAdminBundle,ARTACK/SonataAdminBundle,ARTACK/SonataAdminBundle,osavchenko/SonataAdminBundle,greg0ire/SonataAdminBundle,ARTACK/SonataAdminBundle,jordisala1991/SonataAdminBundle,greg0ire/SonataAdminBundle