optee-imx: remove duplicate clang patch

After the update of the recipe in meta-freescale this patch
(which exists in meta-freescale) does no longer need to
live in meta-digi.

Signed-off-by: Hector Palacios <hector.palacios@digi.com>

meta-digi-arm/dynamic-layers/freescale-layer/recipes-security/optee-imx/optee-os/0007-allow-setting-sysroot-for-clang.patch

@@ -1,30 +0,0 @@
-From db9e44af75c7cfd3316cab15aaa387383df3e57e Mon Sep 17 00:00:00 2001
-From: Brett Warren <brett.warren@arm.com>
-Date: Wed, 23 Sep 2020 09:27:34 +0100
-Subject: [PATCH] optee: enable clang support
-
-When compiling with clang, the LIBGCC_LOCATE_CFLAG variable used
-to provide a sysroot wasn't included, which results in not locating
-compiler-rt. This is mitigated by including the variable as ammended.
-
-Upstream-Status: Pending
-ChangeId: 8ba69a4b2eb8ebaa047cb266c9aa6c2c3da45701
-Signed-off-by: Brett Warren <brett.warren@arm.com>
-
----
- mk/clang.mk | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/mk/clang.mk b/mk/clang.mk
-index c141a3f2..7d067cc0 100644
---- a/mk/clang.mk
-+++ b/mk/clang.mk
-@@ -27,7 +27,7 @@ comp-cflags-warns-clang := -Wno-language-extension-token \
- 
- # Note, use the compiler runtime library (libclang_rt.builtins.*.a) instead of
- # libgcc for clang
--libgcc$(sm)	:= $(shell $(CC$(sm)) $(CFLAGS$(arch-bits-$(sm))) \
-+libgcc$(sm)	:= $(shell $(CC$(sm)) $(LIBGCC_LOCATE_CFLAGS) $(CFLAGS$(arch-bits-$(sm))) \
- 			-rtlib=compiler-rt -print-libgcc-file-name 2> /dev/null)
- 
- # Core ASLR relies on the executable being ready to run from its preferred load