remove unnecessary patch

profiles/nix/default.nix

@@ -21,7 +21,7 @@
     autoOptimiseStore = false;
 
     package = inputs.nix.packages.x86_64-linux.nix.overrideAttrs (oa: {
-      patches = [ ./nix.patch ./flakes.patch ] ++ oa.patches or [];
+      patches = [ ./nix.patch ] ++ oa.patches or [];
     });
 
     extraOptions = ''

profiles/nix/flakes.patch

@@ -1,13 +0,0 @@
-diff --git a/src/nix/get-env.sh b/src/nix/get-env.sh
-index 42c806450..a8563c772 100644
---- a/src/nix/get-env.sh
-+++ b/src/nix/get-env.sh
-@@ -8,6 +8,8 @@ if [[ -n $stdenv ]]; then
-     source $stdenv/setup
- fi
-
-+unset -f isMachO
-+
- # Better to use compgen, but stdenv bash doesn't have it.
- __vars="$(declare -p)"
- __functions="$(declare -F)"