p7zip: remove Blackfin patch

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/p7zip/0001-bfin.patch

@@ -1,19 +0,0 @@
-Add support for blackfin arch.
-
-Fixes compilation error:
-../../../../CPP/myWindows/mySplitCommandLine.cpp:99:8: error: #error ENDIANNESS
-
-Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
-(Patch sent upstream: https://sourceforge.net/p/p7zip/patches/33/
-
-diff -uNr p7zip_15.14.1.org/C/CpuArch.h p7zip_15.14.1/C/CpuArch.h
---- p7zip_15.14.1.org/C/CpuArch.h	2016-02-17 07:27:16.000000000 +0100
-+++ p7zip_15.14.1/C/CpuArch.h	2016-06-08 19:47:49.000000000 +0200
-@@ -66,6 +66,7 @@
-     || defined(__MIPSEL__) \
-     || defined(__MIPSEL) \
-     || defined(_MIPSEL) \
-+    || defined(__BFIN__) \
-     || (defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__))
-   #define MY_CPU_LE
- #endif