[openwrt/openwrt] ramips: switch rt3883 subtarget to kernel 5.4

[LEDE Commits]

adrian pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/7673df799496d98f1828152e1542af14f7708790

commit 7673df799496d98f1828152e1542af14f7708790
Author: Adrian Schmutzler <freifunk at adrianschmutzler.de>
AuthorDate: Thu Aug 6 23:48:32 2020 +0200

    ramips: switch rt3883 subtarget to kernel 5.4
    
    The target has testing support for kernel 5.4 for quite a while,
    compiles fine for all devices, and has been run-tested on Asus
    RT-N56U successfully.
    
    Let's set it to kernel 5.4 by default to increase the audience
    before an 20.xx stable branch.
    
    Signed-off-by: Adrian Schmutzler <freifunk at adrianschmutzler.de>
    Tested-by: Eneas U de Queiroz <cotequeiroz at gmail.com> [Asus RT-N56U]
---
 target/linux/ramips/rt3883/target.mk | 2 --
 1 file changed, 2 deletions(-)

diff --git a/target/linux/ramips/rt3883/target.mk b/target/linux/ramips/rt3883/target.mk
index 9c719f8b76..4a032f5437 100644
--- a/target/linux/ramips/rt3883/target.mk
+++ b/target/linux/ramips/rt3883/target.mk
@@ -9,8 +9,6 @@ CPU_TYPE:=74kc
 
 DEFAULT_PACKAGES += kmod-rt2800-pci kmod-rt2800-soc wpad-mini swconfig
 
-KERNEL_PATCHVER:=4.14
-
 define Target/Description
 	Build firmware images for Ralink RT3662/RT3883 based boards.
 endef