Auto merge of #83822 - petrochenkov:linkandro, r=davidtwco

rustc_target: Remove compiler-rt linking hack on Android

`compiler-rt` did some significant work last year trying to eliminate this kind of duplicated symbols, so the flag may be no longer necessary.
Tested locally with AArch64 Android, seems to work, CI will check the rest of the targets.

compiler/rustc_target/src/spec/android_base.rs

@@ -1,14 +1,8 @@
-use crate::spec::{LinkerFlavor, TargetOptions};
+use crate::spec::TargetOptions;
 
 pub fn opts() -> TargetOptions {
     let mut base = super::linux_base::opts();
     base.os = "android".to_string();
-    // Many of the symbols defined in compiler-rt are also defined in libgcc.
-    // Android's linker doesn't like that by default.
-    base.pre_link_args
-        .entry(LinkerFlavor::Gcc)
-        .or_default()
-        .push("-Wl,--allow-multiple-definition".to_string());
     base.dwarf_version = Some(2);
     base.position_independent_executables = true;
     base.has_thread_local = false;