Remove use of the deprecated string type

tests/clamav/bytecode.cvd

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:a6800da4e3740b611e4f8a8e835be4a867abf8009af502e5bbf038d3ad162fa8
-size 187426

tests/clamav/daily.cvd

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:da96006e191412806bac1a2cef5d48ed0ec1b46efa150cf0aa6c27e734f4c4f8
-size 49476126

tests/clamav/freshclam.conf

@@ -1 +0,0 @@
-DatabaseMirror database.clamav.net

tests/clamav/hashes.json

@@ -1,5 +0,0 @@
-{
-  "bytecode.cvd": "a6800da4e3740b611e4f8a8e835be4a867abf8009af502e5bbf038d3ad162fa8",
-  "daily.cvd": "da96006e191412806bac1a2cef5d48ed0ec1b46efa150cf0aa6c27e734f4c4f8",
-  "main.cvd": "081884225087021e718599e8458ff6c9ee3cdebed8775dd8e445fc7b589d88a6"
-}

tests/clamav/main.cvd

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:081884225087021e718599e8458ff6c9ee3cdebed8775dd8e445fc7b589d88a6
-size 117892267

tests/clamav/update-clamav-database.sh

@@ -1,15 +0,0 @@
-#!/bin/sh
-
-set -e
-
-cd "$(dirname "${0}")"
-
-rm ./*.cvd hashes.json || :
-
-freshclam --datadir=. --config-file=freshclam.conf
-(for i in ./*.cvd;
- do echo '{}' |
-     jq --arg path "$(basename "${i}")" \
-        --arg sha256sum "$(sha256sum "${i}" | awk '{ print $1; }')" \
-        '.[$path] = $sha256sum'; done) |
-  jq -s add > hashes.json