boards*: remove periph_gpio/gpio_irq provided feature

boards/arduino-zero/Makefile.features

boards/common/arduino-mkr/Makefile.features

boards/feather-m0/Makefile.features

boards/samd21-xpro/Makefile.features

boards/saml21-xpro/Makefile.features

boards/samr21-xpro/Makefile.features

boards/samr30-xpro/Makefile.features

boards/sensebox_samd21/Makefile.features

boards/sodaq-autonomo/Makefile.features

boards/sodaq-explorer/Makefile.features

boards/sodaq-one/Makefile.features

boards/sodaq-sara-aff/Makefile.features