ci: disable frames in lcov HTML coverage report

Change-Id: I0c24a412ca33be034fb27b7055a868112bede462
diff --git a/.jenkins.d/00-deps.sh b/.jenkins.d/00-deps.sh
index 52a8a97..1f004f5 100755
--- a/.jenkins.d/00-deps.sh
+++ b/.jenkins.d/00-deps.sh
@@ -29,7 +29,7 @@
                              libboost-all-dev libssl-dev libsqlite3-dev
 
     if [[ $JOB_NAME == *"code-coverage" ]]; then
-        sudo apt-get -qy install gcovr lcov libgd-perl
+        sudo apt-get -qy install gcovr lcov
     fi
 
 elif has CentOS-8 $NODE_LABELS; then
diff --git a/.jenkins.d/30-coverage.sh b/.jenkins.d/30-coverage.sh
index 0363b9e..2ff210e 100755
--- a/.jenkins.d/30-coverage.sh
+++ b/.jenkins.d/30-coverage.sh
@@ -23,7 +23,6 @@
 
     genhtml --branch-coverage \
             --demangle-cpp \
-            --frames \
             --legend \
             --output-directory build/coverage \
             --title "ndn-cxx unit tests" \