linker: Use data execution prevention options by default when linker supports them

compiler/rustc_target/src/spec/linux_kernel_base.rs

@@ -1,11 +1,6 @@
-use crate::spec::{
-    LinkArgs, LinkerFlavor, PanicStrategy, RelocModel, RelroLevel, StackProbeType, TargetOptions,
-};
+use crate::spec::{PanicStrategy, RelocModel, RelroLevel, StackProbeType, TargetOptions};
 
 pub fn opts() -> TargetOptions {
-    let mut pre_link_args = LinkArgs::new();
-    pre_link_args.insert(LinkerFlavor::Gcc, vec!["-Wl,-z,noexecstack".to_string()]);
-
     TargetOptions {
         env: "gnu".to_string(),
         disable_redzone: true,
@@ -17,7 +12,6 @@ pub fn opts() -> TargetOptions {
         needs_plt: true,
         relro_level: RelroLevel::Full,
         relocation_model: RelocModel::Static,
-        pre_link_args,
 
         ..Default::default()
     }