WestCommand: remove deprecated kwarg

The requires_installation constructor kwarg and property have been
deprecated for some time now, and they aren't in use in either Zephyr
v1.14 LTS or v2.7 LTS. It should be fine to remove them at this point.

Signed-off-by: Martí Bolívar <marti.bolivar@nordicsemi.no>

src/west/commands.py

@@ -76,8 +76,7 @@ class WestCommand(ABC):
 
     def __init__(self, name: str, help: str, description: str,
                  accepts_unknown_args: bool = False,
-                 requires_workspace: bool = True,
-                 requires_installation: bool = None):
+                 requires_workspace: bool = True):
         '''Abstract superclass for a west command.
 
         Some fields, such as *name*, *help*, and *description*,
@@ -96,25 +95,15 @@ class WestCommand(ABC):
         :param requires_workspace: if true, the command requires a
             west workspace to run, and running it outside of one is
             a fatal error.
-        :param requires_installation: deprecated equivalent for
-            "requires_workspace"; this may go away eventually.
         '''
         self.name: str = name
         self.help: str = help
         self.description: str = description
         self.accepts_unknown_args: bool = accepts_unknown_args
-        if requires_installation is not None:
-            self.requires_workspace: bool = requires_installation
-        else:
-            self.requires_workspace = requires_workspace
+        self.requires_workspace = requires_workspace
         self.topdir: Optional[str] = None
         self.manifest = None
 
-    @property
-    def requires_installation(self) -> bool:
-        '''Deprecated property alias for self.requires_workspace.'''
-        return self.requires_workspace
-
     def run(self, args: argparse.Namespace, unknown: List[str],
             topdir: PathType, manifest: Optional[Manifest] = None) -> None:
         '''Run the command.