[PATCH for-4.15] cirrus-ci: Drop obsolete dependency

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

markdown as a dependency was dropped in 4.12

Fixes: 5d94433a66 ("cirrus-ci: introduce some basic FreeBSD testing")
Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
---
CC: Roger Pau Monné <roger.pau@xxxxxxxxxx>
CC: Ian Jackson <iwj@xxxxxxxxxxxxxx>

https://cirrus-ci.com/build/6589407613419520 is a successful run with this
change in effect.
---
 .cirrus.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.cirrus.yml b/.cirrus.yml
index 5e3e46368e..0efff6fa98 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -4,7 +4,7 @@ freebsd_template: &FREEBSD_TEMPLATE
     APPEND_LIB: /usr/local/lib
     APPEND_INCLUDES: /usr/local/include
 
-  install_script: pkg install -y seabios markdown gettext-tools gmake
+  install_script: pkg install -y seabios gettext-tools gmake
                                  pkgconf python libiconv bison perl5
                                  yajl lzo2 pixman argp-standalone
                                  libxml2 glib git
-- 
2.11.0