sysutils/fusefs-ntfs: actualize pkg-message.in and README.FreeBSD

• Mention the necessity of fusefs(5) support in the kernel and how to enable it at the system startup time
• Remove outdated URLs and references from the FreeBSD-specific README file; drop the ``Reporting bugs'' section completely as most of it does not reflect modern reality or is simply banal

PR: 264478, 264479