Remove unnecessary aria2 patch

This patch was to compile libaria2 on android.
But we don't compile it for android since a long time.
As it doesn't apply anymore, let's remove it.

kiwixbuild/dependencies/aria2.py

@@ -13,7 +13,6 @@ class Aria2(Dependency):
         archive = Remotefile('aria2-1.36.0.tar.xz',
                              '58d1e7608c12404f0229a3d9a4953d0d00c18040504498b483305bcb3de907a5',
                              'https://github.com/aria2/aria2/releases/download/release-1.36.0/aria2-1.36.0.tar.xz')
-        patches = ["libaria2_android.patch"]
 
         def _post_prepare_script(self, context):
             context.try_skip(self.extract_path)

kiwixbuild/patches/libaria2_android.patch

@@ -1,29 +0,0 @@
-diff -ur libaria2-1.33.1/src/a2io.h libaria2-1.33.1.patched/src/a2io.h
---- libaria2-1.33.1/src/a2io.h	2017-11-08 13:39:06.000000000 +0100
-+++ libaria2-1.33.1.patched/src/a2io.h	2018-03-27 17:02:45.651414060 +0200
-@@ -147,7 +147,7 @@
- // # define a2fseek(fp, offset, origin): No fseek64 and not used in aria2
- #define a2fstat(fd, buf) fstat64(fd, buf)
- // # define a2ftell(fd): No ftell64 and not used in aria2
--#define a2_struct_stat struct stat
-+#define a2_struct_stat struct stat64
- #define a2stat(path, buf) stat64(path, buf)
- #define a2mkdir(path, openMode) mkdir(path, openMode)
- #define a2utimbuf utimbuf
-diff -ur libaria2-1.33.1/src/crypto_endian.h libaria2-1.33.1.patched/src/crypto_endian.h
---- libaria2-1.33.1/src/crypto_endian.h	2017-11-08 13:39:06.000000000 +0100
-+++ libaria2-1.33.1.patched/src/crypto_endian.h	2018-03-27 16:56:55.264371501 +0200
-@@ -33,9 +33,13 @@
- #define BIG_ENDIAN 4321
- #define BYTE_ORDER LITTLE_ENDIAN
- #else // !  defined(_WIN32) || defined(__INTEL_COMPILER) || defined (_MSC_VER)
-+#if defined(__ANDROID__)
-+#include <endian.h>
-+#else // defined(__ANDROID__)
- #ifdef HAVE_SYS_PARAM_H
- #include <sys/param.h>
- #endif // HAVE_SYS_PARAM_H
-+#endif // defined(__ANDROID__)
- #endif // !  defined(_WIN32) || defined(__INTEL_COMPILER) || defined (_MSC_VER)
- 
- #if !defined(LITTLE_ENDIAN) || !defined(BIG_ENDIAN) || !defined(BYTE_ORDER) || \