ipq40xx: remove DK01 and DK04 boards

DK01 and DK04 board support has been in a form of 2 patches that we have
been carrying for a long time.
Both of the patches contain weird changes, dont follow any DT syntax and I
honestly doubt they are even valid.
DK01 and DK04 also have not been converted to DSA even after a long time
and I doubt that anybody in the community even has these boards as they are
QCA reference boards that are not even obtainable anymore.

Since patches for these 2 boards have been just causing us pain when trying
to update the kernel to a new major release or even point releases lets
remove the support for these boards, and if there are users they can easily
be reinstated.

Signed-off-by: Robert Marko <robimarko@gmail.com>

target/linux/ipq40xx/base-files/etc/hotplug.d/firmware/11-ath10k-caldata

@@ -51,9 +51,6 @@ case "$FIRMWARE" in
 	;;
 "ath10k/pre-cal-ahb-a000000.wifi.bin")
 	case "$board" in
-	qcom,ap-dk01.1-c1)
-		caldata_extract "ART" 0x1000 0x2f20
-		;;
 	asus,map-ac2200|\
 	asus,rt-ac42u|\
 	asus,rt-ac58u)
@@ -148,9 +145,6 @@ case "$FIRMWARE" in
 	;;
 "ath10k/pre-cal-ahb-a800000.wifi.bin")
 	case "$board" in
-	qcom,ap-dk01.1-c1)
-		caldata_extract "ART" 0x5000 0x2f20
-		;;
 	asus,map-ac2200|\
 	asus,rt-ac58u)
 		caldata_extract_ubi "Factory" 0x5000 0x2f20