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

system/services/log-flush/log-flush.zig

@@ -60,8 +60,3 @@ pub fn main() void {
     var line: [96]u8 = undefined;
     _ = runtime.system.write(std.fmt.bufPrint(&line, "log-flush: wrote {d} bytes to {s}\n", .{ written, log_path }) catch return);
 }
-
-pub const panic = runtime.panic;
-comptime {
-    _ = &runtime.start._start; // pull the runtime entry shim into the image
-}