we build from package not from current system

generation/40upload-image.sh

@@ -19,13 +19,10 @@ version_to_list () {
 	# remove everything after "+" and "-", and separate numbers according to "."
 	python3 -c "import sys; print(list(map(int, sys.argv[1].split(\"+\")[0].split(\"-\")[0].split(\".\"))))" "$1"
 }
-kernel_revision_arch=$(uname -r)
 
 # strings have to be quoted so that the file is decoded as valid json
 json_metadata="{ \
 	\"server-group\": \"$SERVER_GROUP\", \
-	\"kernel-version\": $(version_to_list $(uname -v | cut -d' ' -f4)), \
-	\"kernel-revision\": \"${kernel_revision_arch%-*}\", \
 	\"mca-version\": $(version_to_list $MCA_VERSION), \
 	\"flb-version\": $(version_to_list $FLB_VERSION), \
 	\"plg-version\": $(version_to_list $PLG_VERSION), \