pygobject3: remove python@2

Formula/pygobject3.rb

@@ -3,6 +3,7 @@ class Pygobject3 < Formula
   homepage "https://wiki.gnome.org/Projects/PyGObject"
   url "https://download.gnome.org/sources/pygobject/3.32/pygobject-3.32.2.tar.xz"
   sha256 "c39ca2a28364b57fa00549c6e836346031e6b886c3ceabfd8ab4b4fed0a83611"
+  revision 1
 
   bottle do
     cellar :any
@@ -18,18 +19,8 @@ class Pygobject3 < Formula
   depends_on "py2cairo"
   depends_on "py3cairo"
   depends_on "python"
-  depends_on "python@2"
 
   def install
-    mkdir "buildpy2" do
-      system "meson", "--prefix=#{prefix}",
-                      "-Dpycairo=true",
-                      "-Dpython=python2.7",
-                      ".."
-      system "ninja", "-v"
-      system "ninja", "install", "-v"
-    end
-
     mkdir "buildpy3" do
       system "meson", "--prefix=#{prefix}",
                       "-Dpycairo=true",
@@ -48,14 +39,9 @@ class Pygobject3 < Formula
       from gi.repository import GLib
       assert(31 == GLib.Date.get_days_in_month(GLib.DateMonth.JANUARY, 2000))
     EOS
-    pythons = [
-      Formula["python@2"].opt_bin/"python2",
-      Formula["python"].opt_bin/"python3",
-    ]
-    pythons.each do |python|
-      pyversion = Language::Python.major_minor_version(python)
-      ENV.prepend_path "PYTHONPATH", lib/"python#{pyversion}/site-packages"
-      system python, "test.py"
-    end
+
+    pyversion = Language::Python.major_minor_version "python3"
+    ENV.prepend_path "PYTHONPATH", lib/"python#{pyversion}/site-packages"
+    system "python3", "test.py"
   end
 end