Remove libcurl and libssl from stage-2 Dockerfile

Change-Id: I1353e23ee3cc60e6df23c698062c604e5f42b593
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/Dockerfile b/Dockerfile
index dfd9ff9..6e76de1 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -42,8 +42,6 @@
         tox
 
 RUN DEBIAN_FRONTEND=noninteractive apt-get -y install \
-    libcurl4-openssl-dev \
-    libssl-dev \
     wget
 
 ENV LC_ALL C.UTF-8