Remove dead code from gen.pyx

[nbruin]

I get two complaints about unreachable code in sage/libs/pari/gen.pyx for toGEN (line 9197 after #12215) and _coerce_c_impl (line 9670 after #12215) and the compiler is correct if I read the code correctly. The edits causing this both are from the pre-trac ticket era (2007 and 2006 respectively)

Component: interfaces

Keywords: easy, sd51

Author: Alex Ghitza

Reviewer: Frédéric Chapoton

Merged: sage-5.12.beta0

Issue created by migration from https://trac.sagemath.org/ticket/13377

[aghitza]

Attachment: trac_13377-dead_code_gen_pyx.patch.gz

[aghitza]

Author: Alex Ghitza

[aghitza]

Changed keywords from easy to easy, sd51

[aghitza]

comment:1

Removed the code in question.

[JohnCremona]

comment:2

The description mentions two blocks to be removed but the patch only removes one. Why?

[aghitza]

comment:3

Ah, forgot to mention that the other block has already disappeared. You can see this by (a) looking at what happens when you apply the patch and rebuild sage--there are no other warnings about unreachable code; and/or (b) reading the very short function _coerce_c_impl and seeing that there are no issues.

[fchapoton]

Reviewer: Frédéric Chapoton

[fchapoton]

comment:4

looks good to me, positive review