[Misc] Enhance Release Note Script and Remove Useless File (#16913)

Author: ysh329

tests/scripts/release/PRERELEASE_NOTES.md

@@ -93,6 +93,10 @@
     "quantization": "Relay",
     "relax": "Relax",
     "unity": "Relax",
+    "transform": "Relax",
+    "kvcache": "Relax",
+    "dlight": "Dlight",
+    "disco": "Disco",
     "tvmscript": "TVMScript",
     "tvmscripts": "TVMScript",
     "tvmc": "TVMC",