ralloc: Omit detailed license information about talloc.
ralloc: Omit detailed license information about talloc.

That information misleads source code auditing tools to think that
ralloc itself is released under LGPL v3.

Instead, simply state talloc is not licensed under a permissive license.

v2: Use wording suggested by Kenneth.

Reviewed-by: Brian Paul <3cb4e1df5ec4da2c7c4af7c52cec8cf340a55a10@vmware.com>
Acked-by: Kenneth Graunke <bd2562f754ec92342f93f61c25d731e290a2ffa8@whitecape.org>

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