removing the need for panic and _start snippets in user space binaries

system/services/fat/fat-test.zig

@@ -101,8 +101,3 @@ pub fn main(init: runtime.process.Init) void {
     }
     _ = runtime.system.write("fat-test: root listing was empty\n");
 }
-
-pub const panic = runtime.panic;
-comptime {
-    _ = &runtime.start._start;
-}

system/services/fat/fat.zig

@@ -242,8 +242,3 @@ pub fn main() void {
         .on_message = onMessage,
     });
 }
-
-pub const panic = runtime.panic;
-comptime {
-    _ = &runtime.start._start;
-}