ar71xx: Remove the v2/v3 from the OpenMesh profile names

The list of v2/v3 devices is getting longer and makes reading the names of
the profiles unnecessary hard.

Signed-off-by: Sven Eckelmann <sven.eckelmann@open-mesh.com>

target/linux/ar71xx/image/legacy-devices.mk

@@ -469,7 +469,7 @@ endef
 LEGACY_DEVICES += WPN824N
 
 define LegacyDevice/OM2P
-  DEVICE_TITLE := OpenMesh OM2P/OM2Pv2/OM2P-HS/OM2P-HSv2/OM2P-HSv3/OM2P-LC
+  DEVICE_TITLE := OpenMesh OM2P/OM2P-HS/OM2P-LC
   DEVICE_PACKAGES := om-watchdog
 endef
 LEGACY_DEVICES += OM2P
@@ -481,7 +481,7 @@ endef
 LEGACY_DEVICES += OM5P
 
 define LegacyDevice/OM5PAC
-  DEVICE_TITLE := OpenMesh OM5P-AC/OM5P-ACv2
+  DEVICE_TITLE := OpenMesh OM5P-AC
   DEVICE_PACKAGES := kmod-ath10k ath10k-firmware-qca988x om-watchdog
 endef
 LEGACY_DEVICES += OM5PAC
@@ -493,13 +493,13 @@ endef
 LEGACY_DEVICES += MR600
 
 define LegacyDevice/MR900
-  DEVICE_TITLE := OpenMesh MR900/MR900v2
+  DEVICE_TITLE := OpenMesh MR900
   DEVICE_PACKAGES := om-watchdog
 endef
 LEGACY_DEVICES += MR900
 
 define LegacyDevice/MR1750
-  DEVICE_TITLE := OpenMesh MR1750/MR1750v2
+  DEVICE_TITLE := OpenMesh MR1750
   DEVICE_PACKAGES := kmod-ath10k ath10k-firmware-qca988x
 endef
 LEGACY_DEVICES += MR1750