sci-electronics/magic: fix x11-libs/cairo dep

Nothing should've actually needed opengl on, so let's drop the dep,
as it's almost certainly bogus.

Bug: https://bugs.gentoo.org/892782
Signed-off-by: Sam James <sam@gentoo.org>

sci-electronics/magic/magic-8.3.232-r1.ebuild

@@ -1,4 +1,4 @@
-# Copyright 1999-2021 Gentoo Authors
+# Copyright 1999-2023 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
@@ -21,7 +21,7 @@ RDEPEND="sys-libs/ncurses:0=
 	dev-lang/tcl:0=
 	dev-lang/tk:0=
 	dev-tcltk/blt
-	cairo? ( x11-libs/cairo[opengl?] )
+	cairo? ( x11-libs/cairo )
 	opengl? (
 		virtual/glu
 		virtual/opengl

sci-electronics/magic/magic-8.3.309-r2.ebuild

@@ -27,7 +27,7 @@ RDEPEND="
 	dev-lang/tcl:0=
 	dev-lang/tk:0=
 	dev-tcltk/blt
-	cairo? ( x11-libs/cairo[opengl?] )
+	cairo? ( x11-libs/cairo )
 	opengl? (
 		virtual/glu
 		virtual/opengl

sci-electronics/magic/magic-8.3.309-r3.ebuild

@@ -27,7 +27,7 @@ RDEPEND="
 	dev-lang/tcl:0=
 	dev-lang/tk:0=
 	dev-tcltk/blt
-	cairo? ( x11-libs/cairo[opengl?] )
+	cairo? ( x11-libs/cairo )
 	opengl? (
 		virtual/glu
 		virtual/opengl