ipq-wifi: drop deprecated .bin support

This patch converts the Qxwlan E2600AC image away from
the deprecated .bin file and to the new .qca4019 method.

As a result, we no longer need to carry around the
legacy support for handling .bin files.

Signed-off-by: Christian Lamparter <chunkeey@gmail.com>

package/firmware/ipq-wifi/Makefile

@@ -48,10 +48,8 @@ define ipq-wifi-install-one-to
   $(INSTALL_DATA) $(1) $(2)/lib/firmware/ath10k/$(3)/board-2.bin
 endef
 
-# Note: .bin deprecated; supports existing boards
-
 define ipq-wifi-install-one
-  $(if $(filter $(suffix $(1)),.QCA4019 .qca4019 .bin),\
+  $(if $(filter $(suffix $(1)),.QCA4019 .qca4019),\
     $(call ipq-wifi-install-one-to,$(1),$(2),QCA4019/hw1.0),\
   $(if $(filter $(suffix $(1)),.QCA9888 .qca9888),\
     $(call ipq-wifi-install-one-to,$(1),$(2),QCA9888/hw2.0),\

package/firmware/ipq-wifi/board-qxwlan_e2600ac.bin

@@ -1 +0,0 @@
-board-qxwlan-e2600ac.bin