package/qt5websockets: drop qt 5.6 support

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
(cherry picked from commit 9c59c7471468290dddc8d5871602080194848197)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/qt5/qt5websockets/qt5websockets.hash

@@ -1,6 +1,3 @@
-# Hash from: https://download.qt.io/official_releases/qt/5.6/5.6.3/submodules/qtwebsockets-opensource-src-5.6.3.tar.xz.mirrorlist
-sha256 a2439045616c89dfe06333734ff4726075c92e01db6e6b6863bc138e39c028eb qtwebsockets-opensource-src-5.6.3.tar.xz
-
 # Hash from: https://download.qt.io/official_releases/qt/5.12/5.12.8/submodules/qtwebsockets-everywhere-src-5.12.8.tar.xz.sha256
 sha256  aa4fe8ac7cffb86745aa4441c4dcaa8965b77a629755b430dac5a98d04be8465  qtwebsockets-everywhere-src-5.12.8.tar.xz
 
@@ -9,7 +6,3 @@ sha256 8177f97513213526df2cf6184d8ff986c675afb514d4e68a404010521b880643 LICENSE.
 sha256 8ceb4b9ee5adedde47b31e975c1d90c73ad27b6b165a1dcd80c7c545eb65b903 LICENSE.GPL3
 sha256 0dbe024961f6ab5c52689cbd036c977975d0d0f6a67ff97762d96cb819dd5652 LICENSE.GPL3-EXCEPT
 sha256 da7eabb7bafdf7d3ae5e9f223aa5bdc1eece45ac569dc21b3b037520b4464768 LICENSE.LGPL3
-sha256 245248009fd0af1725d183248380e476c1283383909358a13686606352bf2a17 LICENSE.GPLv3
-sha256 1996a36160b2158c2be264d2ddfa6148ebe0f1ececff55aca8d754a1ddcc7bb8 LICENSE.LGPLv21
-sha256 79949ee74297883df6e4e7c4bfe1e75a6e7695376b4a87ffc013e27bda509cb2 LGPL_EXCEPTION.txt
-sha256 5ceb37d1c7c1d92878b82af3c0fd5558087f3d5a08a3a4d43850bad4ad265a52 LICENSE.LGPLv3

package/qt5/qt5websockets/qt5websockets.mk

@@ -9,14 +9,9 @@ QT5WEBSOCKETS_SITE = $(QT5_SITE)
 QT5WEBSOCKETS_SOURCE = qtwebsockets-$(QT5_SOURCE_TARBALL_PREFIX)-$(QT5WEBSOCKETS_VERSION).tar.xz
 QT5WEBSOCKETS_DEPENDENCIES = qt5base
 QT5WEBSOCKETS_INSTALL_STAGING = YES
-
-ifeq ($(BR2_PACKAGE_QT5_VERSION_LATEST),y)
 QT5WEBSOCKETS_LICENSE = GPL-2.0+ or LGPL-3.0, GPL-3.0 with exception(tools)
 QT5WEBSOCKETS_LICENSE_FILES = LICENSE.GPL2 LICENSE.GPL3 LICENSE.GPL3-EXCEPT LICENSE.LGPL3
-else
-QT5WEBSOCKETS_LICENSE = GPL-3.0 or LGPL-2.1 with exception or LGPL-3.0
-QT5WEBSOCKETS_LICENSE_FILES = LICENSE.GPLv3 LICENSE.LGPLv21 LGPL_EXCEPTION.txt LICENSE.LGPLv3
-endif
+
 ifeq ($(BR2_PACKAGE_QT5BASE_EXAMPLES),y)
 QT5WEBSOCKETS_LICENSE += , BSD-3-Clause (examples)
 endif