fix: remove Rohan from legacy voices retirement banner (#914)

Rohan is listed in the legacy-migration guide as a voice that is staying,
not being retired. This fixes the incorrect banner on the vapi-voices page.

Co-authored-by: Vapi Tasker <tasker@vapi.ai>

Author: vapi-tasker[bot]

fern/providers/voice/vapi-voices.mdx

@@ -5,7 +5,7 @@ slug: providers/voice/vapi-voices
 ---
 
 <Warning>
-**Voice Update:** Some legacy voices (Spencer, Neha, Harry, Cole, Paige, Hana, Lily, Kylie, Rohan) are being retired on March 1, 2026. If you're using any of these voices, please review the migration guide. [Learn more →](/providers/voice/vapi-voices/legacy-migration)
+**Voice Update:** Some legacy voices (Spencer, Neha, Harry, Cole, Paige, Hana, Lily, Kylie) are being retired on March 1, 2026. If you're using any of these voices, please review the migration guide. [Learn more →](/providers/voice/vapi-voices/legacy-migration)
 </Warning>
 
 ## What are Vapi Voices?