[PATCH 3/3] alpha: Remove trunc() and truncf() implementations.

[Joseph Myers]

On Tue, 24 May 2016, Matt Turner wrote:

> They returned incorrect results for odd values greater than 2**52 and
> 2**23 respectively; and also raised incorrect inexact exceptions.

Incorrect results means a bug that's not currently filed in Bugzilla, and 
as a bug user-visible in releases it should be filed there before fixing 
(and then [BZ #N] included in the ChangeLog entry and the bug resolved as 
FIXED with milestone set accordingly when the fix goes in, so that the bug 
appears in the list of fixed bugs generated for NEWS).

-- 
Joseph S. Myers
joseph@codesourcery.com