README: drop the second Fleet screenshot

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011C2fAvFFcMRkaF7qSvRA1v

Author: claude

README.md

@@ -78,12 +78,11 @@ Hillsborough, both directions (stop 8669 to Britomart, 8664 to Waikowhai).
 ## Bus spotting
 
 <p align="center">
-  <img src="docs/screenshots/fleet.jpg" width="23%" alt="Fleet: the CRRC eT12 MAX and Enviro200, with photos from the AT Metro Wiki">
-  <img src="docs/screenshots/fleet-2.jpg" width="23%" alt="Fleet: the CRRC eS12 MAX on the Inner Link and the Geely C13E">
-  <img src="docs/screenshots/model.jpg" width="23%" alt="A model's page: the CRRC eT12 MAX, its specs, history and fleet numbers">
-  <img src="docs/screenshots/dex.jpg" width="23%" alt="The fleet dex: models you've spotted, and the mysteries">
+  <img src="docs/screenshots/fleet.jpg" width="30%" alt="Fleet: the CRRC eT12 MAX and Enviro200, with photos from the AT Metro Wiki">
+  <img src="docs/screenshots/model.jpg" width="30%" alt="A model's page: the CRRC eT12 MAX, its specs, history and fleet numbers">
+  <img src="docs/screenshots/dex.jpg" width="30%" alt="The fleet dex: models you've spotted, and the mysteries">
 </p>
-<p align="center"><sub>Fleet · More of the fleet · A model's page · Fleet dex</sub></p>
+<p align="center"><sub>Fleet · A model's page · Fleet dex</sub></p>
 
 - **Fleet**: every bus model in Auckland with a real photo (from its
   [AT Metro Wiki](https://atmetro.fandom.com) page, credited on each), how