libical-glib: delete

This is now included with the libical formula.

Closes #19993.

Signed-off-by: ilovezfs <ilovezfs@icloud.com>

Formula/libical-glib.rb

@@ -1,60 +0,0 @@
-class LibicalGlib < Formula
-  desc "Wrapper of libical with support of GObject Introspection"
-  homepage "https://wiki.gnome.org/Projects/libical-glib"
-  url "https://download.gnome.org/sources/libical-glib/1.0/libical-glib-1.0.4.tar.xz"
-  sha256 "3e47c7c19a403e77a598cfa8fc82c8e9ea0b3625e2f28bdcec096aeba37fb0cd"
-  revision 1
-
-  bottle do
-    sha256 "f0276d45417caf684ffe27f510f0b5004aeadd48b774d1590a6be597160470e3" => :high_sierra
-    sha256 "69ac0d22224466d8fd02e65fafe758da6b3d06724accbea82d8b2dcad81f659a" => :sierra
-    sha256 "8e4a96b46dc44aa61f0247b4d5d7afdd6c55bd457b693e599c4da5d74e8e8f49" => :el_capitan
-    sha256 "485062bfe30e8dc477adaf4e25d1a2d91c53f8be33993901a078bec1ae09b4ef" => :yosemite
-  end
-
-  depends_on "pkg-config" => :build
-  depends_on "libical"
-  depends_on "glib"
-  depends_on "gobject-introspection"
-
-  def install
-    system "./configure", "--disable-dependency-tracking",
-                          "--disable-silent-rules",
-                          "--prefix=#{prefix}"
-    system "make", "install"
-  end
-
-  test do
-    (testpath/"test.c").write <<~EOS
-      #include <libical-glib/libical-glib.h>
-
-      int main(int argc, char *argv[]) {
-        ICalParser *parser = i_cal_parser_new();
-        return 0;
-      }
-    EOS
-    gettext = Formula["gettext"]
-    glib = Formula["glib"]
-    libical = Formula["libical"]
-    flags = %W[
-      -I#{gettext.opt_include}
-      -I#{glib.opt_include}/glib-2.0
-      -I#{glib.opt_lib}/glib-2.0/include
-      -I#{include}
-      -I#{libical.opt_include}
-      -L#{gettext.opt_lib}
-      -L#{glib.opt_lib}
-      -L#{libical.opt_lib}
-      -L#{lib}
-      -lglib-2.0
-      -lgobject-2.0
-      -lical
-      -lical-glib-1.0
-      -licalss
-      -licalvcal
-      -lintl
-    ]
-    system ENV.cc, "test.c", "-o", "test", *flags
-    system "./test"
-  end
-end