include: zephyr: dt-bindings: clock remove unused STM32 macros

Remove now unused macros STM32_DOMAIN_CLOCK(), STM32_CLOCK_*_SHIFT,
STM32_CLOCK_*_MASK, STM32_MCO_CFGR(), STM32_MCO_CFGR_*_SHIFT and
STM32_MCO_CFGR_REG_MASK macros, replaced with STM32_DT_CLOCK_SELECT(),
STM32_DT_CLKSEL_*_SHIFT and STM32_DT_CLKSEL_*_MASK macros.

Signed-off-by: Etienne Carriere <etienne.carriere@st.com>