debian: Remove python2 deps.

Author: mtwebster

debian/control

@@ -17,8 +17,7 @@ Build-Depends:
  libx11-dev,
  libxkbfile-dev,
  meson,
- python,
- python-gi-dev,
+# python3-gi-dev,
  python3,
  valac,
 Standards-Version: 3.9.6

debian/rules

@@ -4,7 +4,7 @@
 # meson support is baked in
 
 %:
-	dh $@ --with=gir,python2,python3
+	dh $@ --with=gir,python3
 
 override_dh_auto_configure:
 	mkdir -p debian/build