Address review feedback (#4485)

- Drop is_nvidia_nouveau() helper. It is not called anywhere yet; can
  be re-added when a consumer lands.
- Collapse the Sway+Nvidia confirmation result handling into a single
  expression now that allow_skip=False guarantees a boolean answer.

archinstall/lib/hardware.py

@@ -81,17 +81,6 @@ class GfxDriver(Enum):
 			case _:
 				return False
 
-	def is_nvidia_nouveau(self) -> bool:
-		"""
-		True for the open-source nouveau driver (Mesa) for Nvidia GPUs.
-		Currently only NvidiaOpenSource. Officially supported by Sway.
-		"""
-		match self:
-			case GfxDriver.NvidiaOpenSource:
-				return True
-			case _:
-				return False
-
 	def packages_text(self) -> str:
 		pkg_names = [p.value for p in self.gfx_packages()]
 		text = tr('Installed packages') + ':\n'

archinstall/lib/profile/profile_menu.py

@@ -105,8 +105,7 @@ class ProfileMenu(AbstractSubMenu[ProfileConfiguration]):
 						preset=False,
 					).show()
 
-					if not result.get_value():
-						return preset
+					return driver if result.get_value() else preset
 
 		return driver