ci: don't install libssh2 since we build it
diff --git a/azure-pipelines/docker/xenial b/azure-pipelines/docker/xenial
index 62d42b2..74be1ac 100644
--- a/azure-pipelines/docker/xenial
+++ b/azure-pipelines/docker/xenial
@@ -11,8 +11,8 @@ RUN echo 'deb http://ppa.launchpad.net/hola-launchpad/valgrind/ubuntu xenial mai
git \
gosu \
libcurl4-gnutls-dev \
+ libgcrypt20-dev \
libpcre3-dev \
- libssh2-1-dev \
libssl-dev \
libz-dev \
ninja-build \