Revert change to redox userspace targets

targets/arm-unknown-redox.json

@@ -1,26 +0,0 @@
-{
-    "llvm-target": "arm-unknown-redox",
-    "target-endian": "little",
-    "target-pointer-width": "32",
-    "data-layout": "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64",
-    "arch": "arm",
-    "os": "redox",
-    "env": "",
-    "vendor": "unknown",
-    "target-family": "redox",
-    "pre-link-args": ["-nostdlib", "-static"],
-    "features": "+soft-float",
-    "dynamic-linking": false,
-    "executables": true,
-    "relocation-model": "static",
-    "code-model": "default",
-    "disable-redzone": true,
-    "eliminate-frame-pointer": false,
-    "exe-suffix": "",
-    "has-rpath": false,
-    "no-compiler-rt": true,
-    "no-default-libraries": true,
-    "position-independent-executables": false,
-    "has-elf-tls": true,
-    "panic-strategy": "abort"
-}

targets/x86_64-unknown-redox.json

@@ -1,29 +0,0 @@
-{
-    "llvm-target": "x86_64-unknown-redox",
-    "target-endian": "little",
-    "target-pointer-width": "64",
-    "data-layout": "e-m:e-i64:64-f80:128-n8:16:32:64-S128",
-    "arch": "x86_64",
-    "os": "redox",
-    "env": "",
-    "vendor": "unknown",
-    "target-family": "redox",
-    "pre-link-args": ["-m64", "-Wl,--as-needed", "-Wl,-z,noexecstack", "-nostartfiles", "-nostdlib", "-static"],
-    "late-link-args": ["libc-artifacts/lib/crt0.o", "libc-artifacts/lib/libm.a", "libc-artifacts/lib/libc.a", "libc-artifacts/lib/libgcc.a"],
-    "features": "",
-    "dynamic-linking": false,
-    "executables": true,
-    "relocation-model": "static",
-    "code-model": "default",
-    "disable-redzone": true,
-    "eliminate-frame-pointer": false,
-    "exe-suffix": "",
-    "has-rpath": false,
-    "no-compiler-rt": true,
-    "no-default-libraries": true,
-    "position-independent-executables": false,
-    "lib-allocation-crate": "alloc_system",
-    "exe-allocation-crate": "alloc_system",
-    "has-elf-tls": true,
-    "panic-strategy": "abort"
-}