Removed the preferred_release_option from build.zig

- Removed the `preferred_release_option` from `build.zig` since it's transitive to other projects. This option is better reserved for library users.

build.zig

@@ -3,9 +3,7 @@ pub const generate = @import("src/generate.zig");
 
 pub fn build(b: *std.Build) void {
     const target = b.standardTargetOptions(.{});
-    const optimize = b.standardOptimizeOption(.{
-        .preferred_optimize_mode = .ReleaseSafe,
-    });
+    const optimize = b.standardOptimizeOption(.{});
     //const build_options = b.addOptions();
     const bin_name = b.option([]const u8, "name", "A name for the binary being created.");
     b.exe_dir = "./bin";