Merge branch 'aarch64user-struct' into 'master'

remove function struct export workaround for aarch64_user header

See merge request redox-os/relibc!1364

src/header/arch_aarch64_user/cbindgen.toml

@@ -5,3 +5,12 @@ style = "Tag"
 
 [enum]
 prefix_with_name = true
+
+[export]
+include = [
+  "user_regs_struct",
+  "user_fpsimd_struct",
+  "elf_gregset_t",
+  "elf_greg_t",
+  "elf_fpregset_t"
+]

src/header/arch_aarch64_user/mod.rs

@@ -18,13 +18,3 @@ pub struct user_fpsimd_struct {
 pub type elf_greg_t = c_ulong;
 pub type elf_gregset_t = *mut [c_ulong; 34];
 pub type elf_fpregset_t = user_fpsimd_struct;
-
-#[unsafe(no_mangle)]
-pub extern "C" fn _cbindgen_export_aarch64_user(
-    a: user_regs_struct,
-    b: user_fpsimd_struct,
-    c: elf_gregset_t,
-    d: elf_greg_t,
-    e: elf_fpregset_t,
-) {
-}