ci: install gcovr via apt

Change-Id: I83a16e080145e206a08cc5255a906e41605ceca8
refs: #4771
diff --git a/.jenkins.d/00-deps.sh b/.jenkins.d/00-deps.sh
index a9b3a34..747bf93 100755
--- a/.jenkins.d/00-deps.sh
+++ b/.jenkins.d/00-deps.sh
@@ -28,8 +28,7 @@
                              libsqlite3-dev libssl-dev libpcap-dev libsystemd-dev
 
     if [[ $JOB_NAME == *"code-coverage" ]]; then
-        sudo apt-get -qy install lcov libgd-perl python-setuptools
-        sudo easy_install --upgrade gcovr
+        sudo apt-get -qy install gcovr lcov libgd-perl
     fi
 fi