fix(main/libffi): remove export-symbol patch for 32 bit arches

Seems to be no longer needed, and having this patch causes build
failure on 32bit arches for at least some packages that depend on libffi
(like php).

packages/libffi/0003-fix-export-symbols-for-32-bits.patch

@@ -1,24 +0,0 @@
-https://github.com/termux/termux-packages/issues/18804
-
---- a/libffi.map.in
-+++ b/libffi.map.in
-@@ -20,7 +20,9 @@
- 	ffi_type_sint64;
- 	ffi_type_float;
- 	ffi_type_double;
-+#ifdef HAVE_LONG_DOUBLE
- 	ffi_type_longdouble;
-+#endif
- 	ffi_type_pointer;
- 
- 	/* Exported functions.  */
-@@ -49,7 +51,9 @@
- 	/* Exported data variables.  */
- 	ffi_type_complex_float;
- 	ffi_type_complex_double;
-+#ifdef HAVE_LONG_DOUBLE
- 	ffi_type_complex_longdouble;
-+#endif
- } LIBFFI_BASE_8.0;
- #endif
- 

packages/libffi/build.sh

@@ -3,6 +3,7 @@ TERMUX_PKG_DESCRIPTION="Library providing a portable, high level programming int
 TERMUX_PKG_LICENSE="MIT"
 TERMUX_PKG_MAINTAINER="@termux"
 TERMUX_PKG_VERSION="3.4.6"
+TERMUX_PKG_REVISION=1
 TERMUX_PKG_SRCURL=https://github.com/libffi/libffi/releases/download/v${TERMUX_PKG_VERSION}/libffi-${TERMUX_PKG_VERSION}.tar.gz
 TERMUX_PKG_SHA256=b0dea9df23c863a7a50e825440f3ebffabd65df1497108e5d437747843895a4e
 TERMUX_PKG_BREAKS="libffi-dev"