Can not run doxygen successfully

See gazebosim/gz-sim#1409

ubuntu/debian/control

@@ -3,7 +3,6 @@ Maintainer: Jose Luis Rivero <[email protected]>
 Section: science
 Priority: optional
 Build-Depends: cmake,
-               doxygen,
                pkg-config,
                debhelper (>= 11),
                dh-python,
@@ -28,6 +27,8 @@ Build-Depends: cmake,
                libsdformat13-dev,
                python3-dev,
                python3-pybind11
+# doxygen and grapviz are excluded per bug:
+# https://github.com/ignitionrobotics/ign-gazebo/issues/1409
 Vcs-Browser: https://github.com/ignitionrobotics/ignition-gazebo
 Vcs-Git: https://github.com/ignition-release/ign-gazebo7-release
 Standards-Version: 4.5.1

ubuntu/debian/libignition-gazebo-dev.install

@@ -2,7 +2,7 @@ usr/include/*
 usr/lib/*/*.so
 usr/lib/*/pkgconfig/*.pc
 usr/lib/*/cmake/ignition-gazebo*/*
-usr/share/ignition/ignition-gazebo[0-99]/ignition-gazebo[0-99].tag.xml
+# usr/share/ignition/ignition-gazebo[0-99]/ignition-gazebo[0-99].tag.xml
 usr/share/ignition/gazebo[0-99].yaml
 usr/share/ignition/model[0-99].yaml
 usr/lib/ruby/ignition/cmdgazebo[0-99].rb