nix: delete `-DWITH_SNAPPY=1` from rocksdb cmakeFlags

Signed-off-by: strawberry <strawberry@puppygock.gay>

flake.nix

@@ -45,6 +45,10 @@
           # we have this already at https://github.com/girlbossceo/rocksdb/commit/a935c0273e1ba44eacf88ce3685a9b9831486155
           # unsetting this so i don't have to revert it and make this nix exclusive
           patches = [];
+          # no real reason to have snappy, no one uses this
+          cmakeFlags = pkgs.lib.subtractLists
+            [ "-DWITH_SNAPPY=1" ]
+            old.cmakeFlags;
         });
         # TODO: remove once https://github.com/NixOS/nixpkgs/pull/314945 is available
         liburing = pkgs.liburing.overrideAttrs (old: {