MAINTAINERS: drop few "area: Sensors" from modules

Few west areas are paired with the sensor labels right now, this causes
the issue assignee workflow to assign sensor issues to the maintainers
of these areas as well.

Drop those areas from the maintainer file, they should get some
different label if needed.

Signed-off-by: Fabio Baltieri <[email protected]>

MAINTAINERS.yml

@@ -4188,8 +4188,6 @@ West:
     - erwango
   files:
     - modules/hal_st/Kconfig
-  labels:
-    - "area: Sensors"
 
 "West project: hal_stm32":
   status: maintained
@@ -4228,8 +4226,6 @@ West:
     - mah-eiSmart
   files:
     - modules/Kconfig.wurthelektronik
-  labels:
-    - "area: Sensors"
 
 "West project: hal_xtensa":
   status: maintained
@@ -4548,8 +4544,6 @@ West:
   maintainers:
     - microbuilder
   files: []
-  labels:
-    - "area: Sensors"
 
 "West project: hostap":
   status: maintained