beta75X aiframe: exclude on most boards (only used on Omnibus)

ROMFS/px4fmu_common/init.d/airframes/4041_beta75x

@@ -5,6 +5,12 @@
 # @type Quadrotor H
 # @class Copter
 #
+# @board px4_fmu-v2 exclude
+# @board px4_fmu-v3 exclude
+# @board px4_fmu-v4 exclude
+# @board px4_fmu-v4pro exclude
+# @board px4_fmu-v5 exclude
+#
 # @output MAIN1 motor 1
 # @output MAIN2 motor 2
 # @output MAIN3 motor 3