Update release_notes.txt (#2780)

release_notes.txt

@@ -6,13 +6,6 @@ Metadata changes:
    33 (en), 44 (en), 212 (en, fr), 1310 (en)
  - Updated carrier data for country calling code(s): 237 (en), 675 (en)
  - Updated / refreshed time zone meta data.
- New Resources available:
- - The phone and short number metadata of all regions are available now in
-   CSV format, at resources/metdata directory. This helps in better readability
-   and maintainance compared to RegEx representation for all numbering metadata.
-   The legacy XML metadata files (like PhoneNumberMetadata.xml) are now auto
-   genarated from this data; so now users can also build tools around it based on
-   their requirements.
 
 May 05, 2022: v8.12.48
 Metadata changes: