Remove depends on x11 (#95475)

Casks/brl-cad-mged.rb

@@ -8,7 +8,7 @@ cask "brl-cad-mged" do
   name "BRL-CAD"
   homepage "https://brlcad.org/"
 
-  depends_on x11: true
+  depends_on cask: "xquartz"
 
   app "BRL-CAD : MGED #{version}.app"
 end

Casks/dia.rb

@@ -8,7 +8,7 @@ cask "dia" do
   name "Dia"
   homepage "http://dia-installer.de/"
 
-  depends_on x11: true
+  depends_on cask: "xquartz"
 
   app "Dia.app"
 end

Casks/gtkwave.rb

@@ -9,8 +9,6 @@ cask "gtkwave" do
   desc "GTK+ based wave viewer"
   homepage "https://gtkwave.sourceforge.io/"
 
-  depends_on x11: true
-
   app "gtkwave.app"
   binary "#{appdir}/gtkwave.app/Contents/Resources/bin/gtkwave_bin_launcher.sh", target: "gtkwave"
 

Casks/ncar-ncl.rb

@@ -17,7 +17,7 @@ cask "ncar-ncl" do
   desc "Interpreted language for scientific data analysis and visualization"
   homepage "https://www.ncl.ucar.edu/"
 
-  depends_on x11: true
+  depends_on cask: "xquartz"
   depends_on formula: "gcc"
   depends_on macos: ">= :high_sierra"
 

Casks/x2goclient.rb

@@ -12,8 +12,6 @@ cask "x2goclient" do
   name "X2Go Client"
   homepage "https://wiki.x2go.org/doku.php"
 
-  depends_on x11: true
-
   app "x2goclient.app"
 
   zap trash: [