bug#36250: [PATCH] Improve a bit frame-resize-pixelwise documentation

[Eli Zaretskii]

> From: Konstantin Kharlamov <Hi-Angel@yandex.ru>
> Date: Tue, 18 Jun 2019 23:35:02 +0300
> 
> * src/frame.c (syms_of_frame): remove from the second paragraph bits
> of text that duplicate the first paragraph, and mention that the
> variable needs to be set before a frame started.

I don't see why you needed to remove part of the text.  It isn't a
repetition: the first sentence talks about frames in general, the
second only about the initial frame.  The bit about the init file is
only relevant to the latter.

Thanks.