remove references to deprecated RQDF

[zimmermann6]

In Sage 4.8:

sage: search_src("RQDF")
symbolic/constants.py:175:- Didier Deshommes (2007-03-27): added constants from RQDF (deprecated)
rings/all.py:87:# from real_rqdf import RealQuadDoubleField, RQDF, QuadDoubleElement
rings/real_mpfr.pyx:4960:    elif type == "RQDF":
rings/real_mpfr.pyx:4961:        from real_rqdf import RQDF
rings/real_mpfr.pyx:4962:        return RQDF
misc/explain_pickle.py:2410:#         doctest:...: DeprecationWarning: RQDF is deprecated; use RealField(212) instead.
misc/explain_pickle.py:2411:#         doctest:...: DeprecationWarning: RQDF is deprecated; use RealField(212) instead.
misc/explain_pickle.py:2412:#         doctest:...: DeprecationWarning: RQDF is deprecated; use RealField(212) instead.

Duplicate of #13037.

CC: @roed314 @jdemeyer

Component: basic arithmetic

Reviewer: Paul Zimmermann

Issue created by migration from https://trac.sagemath.org/ticket/12458

[tscrim]

comment:1

This was done at some point before 5.5.rc0:

travis@travis-virtualbox:~/sage-5.5.rc0/devel/sage-combinat/sage/combinat$ cd ../rings/
travis@travis-virtualbox:~/sage-5.5.rc0/devel/sage-combinat/sage/rings$ ls real*real_double.c    real_interval_absolute.c    real_lazy.pxd  real_mpfi.pyx
real_double.pxd  real_interval_absolute.pyx  real_lazy.pyx  real_mpfr.c
real_double.pxi  real_interval_field.py      real_mpfi.c    real_mpfr.pxd
real_double.pyx  real_lazy.c                 real_mpfi.pxd  real_mpfr.pyx
travis@travis-virtualbox:~/sage-5.5.rc0/devel/sage-combinat/sage/rings$ grep "RQDF" *

[zimmermann6]

comment:2

this is indeed fixed now. Thanks for looking at it. Jeroen, should we put "tscrim" as author?

Paul

[zimmermann6]

Reviewer: Paul Zimmermann

[jdemeyer]

comment:3

No, duplicate tickets cannot have an author since there is nothing to be the author of.

[zimmermann6]

comment:4

Replying to @jdemeyer:

No, duplicate tickets cannot have an author since there is nothing to be the author of.

ok. Nevertheless, "tscrim", please put your real name on trac.sagemath.org so that we can identify you for other tickets.

Paul

[tscrim]

comment:5

Changed.

Best,

Travis