pgsql: Remove analyze_new_cluster script from pg_upgrade

Remove analyze_new_cluster script from pg_upgrade

Since this script just runs vacuumdb anyway, remove the script and
replace the instructions to run it with instructions to run vacuumdb
directly.

Reviewed-By: Michael Paquier
Discussion: https://postgr.es/m/CABUevEwg5LDFzthhxzSj7sZGMiVsZe0VVNbzzwTQOHJ=rN7+5A@mail.gmail.com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/8f113698b63b15a4e0a4b15d3ee37238c1d1821d

Modified Files
--------------
src/bin/pg_upgrade/.gitignore   |   2 -
src/bin/pg_upgrade/Makefile     |   2 +-
src/bin/pg_upgrade/check.c      | 101 ++++++----------------------------------
src/bin/pg_upgrade/pg_upgrade.c |   6 +--
src/bin/pg_upgrade/pg_upgrade.h |   4 +-
src/bin/pg_upgrade/test.sh      |   8 +---
src/tools/msvc/vcregress.pl     |   3 +-
7 files changed, 20 insertions(+), 106 deletions(-)