pgsql: Remove unused module imports from TAP tests

Remove unused module imports from TAP tests

The Config and Cwd modules were no longer used, but remained imported,
in a number of tests. Remove to keep the imports to the actually used
modules.

Reviewed-by: Andrew Dunstan <andrew(at)dunslane(dot)net>
Discussion: https://postgr.es/m/A5A074CD-3198-492B-BE5E-7961EFC3733F@yesql.se

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/7dac61402e34c6d41d5d11cdc4c6a55f91e24026

Modified Files
--------------
contrib/amcheck/t/002_cic.pl | 1 -
contrib/amcheck/t/003_cic_2pc.pl | 1 -
src/bin/pg_basebackup/t/010_pg_basebackup.pl | 2 --
src/bin/pg_checksums/t/002_actions.pl | 1 -
src/bin/pg_dump/t/001_basic.pl | 1 -
src/bin/pg_dump/t/002_pg_dump.pl | 1 -
src/bin/pg_test_fsync/t/001_basic.pl | 1 -
src/bin/pg_test_timing/t/001_basic.pl | 1 -
src/bin/pg_verifybackup/t/002_algorithm.pl | 2 --
src/bin/pg_verifybackup/t/003_corruption.pl | 2 --
src/bin/pg_verifybackup/t/004_options.pl | 2 --
src/bin/pg_verifybackup/t/005_bad_manifest.pl | 2 --
src/bin/pg_verifybackup/t/006_encoding.pl | 2 --
src/bin/pg_verifybackup/t/007_wal.pl | 2 --
src/bin/pg_verifybackup/t/008_untar.pl | 1 -
src/bin/pg_verifybackup/t/009_extract.pl | 2 --
src/bin/pg_verifybackup/t/010_client_untar.pl | 1 -
src/bin/pgbench/t/001_pgbench_with_server.pl | 1 -
src/test/modules/libpq_pipeline/t/001_libpq_pipeline.pl | 1 -
src/test/modules/test_pg_dump/t/001_base.pl | 1 -
src/test/perl/PostgreSQL/Test/Cluster.pm | 1 -
src/test/recovery/t/011_crash_recovery.pl | 1 -
src/test/recovery/t/013_crash_restart.pl | 1 -
src/test/recovery/t/017_shm.pl | 1 -
src/test/recovery/t/020_archive_status.pl | 1 -
src/test/recovery/t/021_row_visibility.pl | 1 -
26 files changed, 34 deletions(-)