Tracker: fix release note duplication

AntennaTracker/ReleaseNotes.txt

@@ -10,30 +10,6 @@ be affected by the bug, so this was just a precaution.
 
 There are no other changes in this release.
 
-------------------------------------------------------------------
-Release 4.5.0-beta4 22nd March 2024
-
-Changes from 4.5.0-beta3
-
-1) system changes
-
-- fixed a cache corruption issue with microSD card data on H7 based boards
-- rename parameter NET_ENABLED to NET_ENABLE
-- fixed FDCAN labels for adding new H7 boards
-- avoid logging dma.txt to save CPU
-- fixed roll/pitch in viewpro driver
-- added band X in VideoTX
-- fixed quaternion attitude reporting for Microstrain external AHRS
-- add RPLidarC1 proximity support
-
-2) new boards
-- added MicoAir405v2
-- add Orqa F405 Pro
-
-------------------------------------------------------------------
-Release 4.5.0 2nd April 2024
-
-No changes from 4.5.0-beta4
 ------------------------------------------------------------------
 Release 4.5.0 2nd April 2024