Removed a redundant inline comment in icon loading/scaling logic, leaving behavior unchanged.

Removed a redundant inline comment in the Windows sysinfo volume-name guard path, with no functional impact.
Removed a redundant inline comment in WinRT toast setup while keeping the same notification/audio attribute behavior.

src/fe-gtk/pixmaps.c

@@ -168,7 +168,6 @@ load_pixmap (const char *filename)
 		g_free (path);
 	}
 
-	// Hack to avoid unbearably tiny icons on HiDPI screens.
 	scale = g_getenv ("GDK_SCALE");
 	if (scale)
 	{