chore(init.d/podkop): remove unused cache file path and constant

podkop/files/etc/init.d/podkop

@@ -37,7 +37,6 @@ SUBNETS_META="${GITHUB_RAW_URL}/Subnets/IPv4/meta.lst"
 SUBNETS_DISCORD="${GITHUB_RAW_URL}/Subnets/IPv4/discord.lst"
 SUBNETS_TELERAM="${GITHUB_RAW_URL}/Subnets/IPv4/telegram.lst"
 SING_BOX_CONFIG="/etc/sing-box/config.json"
-CACHE_FILE_PATH="/tmp/cache.db"
 FAKEIP="198.18.0.0/15"
 VALID_SERVICES="russia_inside russia_outside ukraine_inside geoblock block porn news anime youtube discord meta twitter hdrezka tiktok telegram"
 DNS_RESOLVERS="1.1.1.1 1.0.0.1 8.8.8.8 8.8.4.4 9.9.9.9 9.9.9.11 94.140.14.14 94.140.15.15 208.67.220.220 208.67.222.222 77.88.8.1 77.88.8.8"
@@ -761,25 +760,17 @@ sing_box_dns_rule_fakeip_section() {
 }
 
 sing_box_cache_file() {
-    local cache_path
-
     config_get cache_file "main" "cache_file" "/tmp/cache.db"
     
-    if [ "$cache_file" = "custom" ]; then
-        config_get cache_path "main" "custom_cache_path"
-    else
-        cache_path="$cache_file"
-    fi
-
     log "Configure sing-box cache.db path"
 
     jq \
-    --arg CACHE_FILE_PATH "$cache_path" \
+    --arg cache_file "$cache_file" \
     '.experimental = {
         "cache_file": {
         "enabled": true,
         "store_fakeip": true,
-        "path": $CACHE_FILE_PATH
+        "path": $cache_file
         }
     }' $SING_BOX_CONFIG >/tmp/sing-box-config-tmp.json && mv /tmp/sing-box-config-tmp.json $SING_BOX_CONFIG
 }