Remove 3.0.0 from metadata

Alarm-Siren · Alarm-Siren · commit 566c67210f58 · 2023-03-05T22:31:46.000Z
This is required by PCM.
diff --git a/metadata.json b/metadata.json
@@ -26,12 +26,6 @@
             "version": "4.0.0",
             "status": "stable",
             "kicad_version": "7.0"
-        },
-        {
-            "version": "3.0.0",
-            "status": "stable",
-            "kicad_version": "6.0"
-            "kicad_version_max": "6.0"
         }
     ]
 }
