chore(stacks): delete pgweb

Author: EamonZhang

scripts/checker.py

@@ -42,13 +42,7 @@
         "type": "github",
         "owner": "prometheus-community",
         "match": "^v[0-9]{1,}\.[0-9]{1,}\.[0-9]{1,}$",
-    },
-    "pgweb": {
-        "name": "pgweb",
-        "type": "github",
-        "owner": "sosedoff",
-        "match": "^v[0-9]{1,}\.[0-9]{1,}\.[0-9]{1,}$",
-    },    
+    },  
     "jmx_exporter": {
         "name": "jmx_exporter",
         "type": "github",