Remove arm_neon.h workaround

[happystraw]

remove workaround:

phpz/build/phpz.h

Lines 4 to 29 in 031962d

	/*
	* Workaround: skip <arm_neon.h> on aarch64.
	*
	* Why it's needed:
	* On aarch64, `php.h` -> `Zend/zend_types.h` unconditionally includes
	* <arm_neon.h>, which pulls in Clang's <arm_vector_types.h>. Those
	* headers use the `__mfp8` builtin type and thousands of
	* `__builtin_neon_*` intrinsics that Zig's translate-c (aro) cannot
	* parse, so binding generation fails before any of our code is reached.
	*
	* Why it's safe:
	* PHP only uses NEON inside macro bodies (e.g. HT_HASH_RESET in
	* zend_types.h) and static inline functions. translate-c only parses
	* top-level declarations (typedefs / structs / function prototypes),
	* none of which reference NEON types. The macros are expanded later by
	* the real C compiler when the extension is built, where <arm_neon.h>
	* is included normally and handled by native Clang.
	*
	* How it works:
	* Predefining the headers' own include guards makes their bodies expand
	* to nothing during translate-c, while the C build still sees them
	* unchanged.
	*/
	#if defined(__aarch64__) || defined(_M_ARM64)
	#define __ARM_NEON_H
	#endif

upstream:

https://codeberg.org/ziglang/translate-c/issues/376

Vexu/arocc#1028