treewide: remove files for building 5.10 kernel

All targets are bumped to 5.15. Remove the old 5.10 patches, configs
and files using:

  find target/linux -iname '*-5.10' -exec rm -r {} \;

Further, remove the 5.10 include.

Signed-off-by: Nick Hainke <vincent@systemli.org>

1 files changed, 0 insertions, 28 deletions

diff --git a/target/linux/generic/hack-5.10/261-lib-arc4-unhide.patch b/target/linux/generic/hack-5.10/261-lib-arc4-unhide.patch
deleted file mode 100644
index b61dd269a4..0000000000
--- a/target/linux/generic/hack-5.10/261-lib-arc4-unhide.patch
+++ /dev/null
@@ -1,28 +0,0 @@
-From: Koen Vandeputte <koen.vandeputte@ncentric.com>
-Subject: crypto: arc4 unhide
-
-This makes it possible to select CONFIG_CRYPTO_LIB_ARC4 directly. We 
-need this to be able to compile this into the kernel and make use of it 
-from backports.
-
-Submitted-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
-Submitted-by: David Bauer <mail@david-bauer.net>
-Submitted-by: Christian Lamparter <chunkeey@gmail.com>
-Submitted-by: Ansuel Smith <ansuelsmth@gmail.com>
-Submitted-by: Robert Marko <robimarko@gmail.com>
-Submitted-by: Hauke Mehrtens <hauke@hauke-m.de>
----
- lib/crypto/Kconfig                            |   2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
---- a/lib/crypto/Kconfig
-+++ b/lib/crypto/Kconfig
-@@ -6,7 +6,7 @@ config CRYPTO_LIB_AES
- 	tristate
- 
- config CRYPTO_LIB_ARC4
--	tristate
-+	tristate "ARC4 cipher library"
- 
- config CRYPTO_ARCH_HAVE_LIB_BLAKE2S
- 	bool