dt-bindings: mfd: timers: Update maintainers for st,stm32-timers

Benjamin has left the company, remove his name from maintainers.

Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Link: https://lore.kernel.org/r/20211110150144.18272-3-patrice.chotard@foss.st.com
Signed-off-by: Rob Herring <robh@kernel.org>

Author: Patrice Chotard

Documentation/devicetree/bindings/mfd/st,stm32-timers.yaml

@@ -17,7 +17,6 @@ description: |
       programmable prescaler.
 
 maintainers:
-  - Benjamin Gaignard <benjamin.gaignard@st.com>
   - Fabrice Gasnier <fabrice.gasnier@st.com>
 
 properties: