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@dunslane.net>
Discussion: https://postgr.es/m/A5A074CD-3198-492B-BE5E-7961EFC3733F@yesql.se

contrib/amcheck/t/002_cic.pl

@@ -5,7 +5,6 @@
 use strict;
 use warnings;
 
-use Config;
 use PostgreSQL::Test::Cluster;
 use PostgreSQL::Test::Utils;
 

contrib/amcheck/t/003_cic_2pc.pl

@@ -5,7 +5,6 @@
 use strict;
 use warnings;
 
-use Config;
 use PostgreSQL::Test::Cluster;
 use PostgreSQL::Test::Utils;
 

src/bin/pg_basebackup/t/010_pg_basebackup.pl

@@ -3,8 +3,6 @@
 
 use strict;
 use warnings;
-use Cwd;
-use Config;
 use File::Basename qw(basename dirname);
 use File::Path qw(rmtree);
 use Fcntl qw(:seek);

src/bin/pg_checksums/t/002_actions.pl

@@ -6,7 +6,6 @@
 
 use strict;
 use warnings;
-use Config;
 use PostgreSQL::Test::Cluster;
 use PostgreSQL::Test::Utils;
 

src/bin/pg_dump/t/001_basic.pl

@@ -4,7 +4,6 @@
 use strict;
 use warnings;
 
-use Config;
 use PostgreSQL::Test::Cluster;
 use PostgreSQL::Test::Utils;
 use Test::More;

src/bin/pg_dump/t/002_pg_dump.pl

@@ -4,7 +4,6 @@
 use strict;
 use warnings;
 
-use Config;
 use PostgreSQL::Test::Cluster;
 use PostgreSQL::Test::Utils;
 use Test::More;

src/bin/pg_test_fsync/t/001_basic.pl

@@ -4,7 +4,6 @@
 use strict;
 use warnings;
 
-use Config;
 use PostgreSQL::Test::Utils;
 use Test::More;
 

src/bin/pg_test_timing/t/001_basic.pl

@@ -4,7 +4,6 @@
 use strict;
 use warnings;
 
-use Config;
 use PostgreSQL::Test::Utils;
 use Test::More;
 

src/bin/pg_verifybackup/t/002_algorithm.pl

@@ -5,8 +5,6 @@
 
 use strict;
 use warnings;
-use Cwd;
-use Config;
 use File::Path qw(rmtree);
 use PostgreSQL::Test::Cluster;
 use PostgreSQL::Test::Utils;

src/bin/pg_verifybackup/t/003_corruption.pl

@@ -5,8 +5,6 @@
 
 use strict;
 use warnings;
-use Cwd;
-use Config;
 use File::Path qw(rmtree);
 use PostgreSQL::Test::Cluster;
 use PostgreSQL::Test::Utils;

src/bin/pg_verifybackup/t/004_options.pl

@@ -5,8 +5,6 @@
 
 use strict;
 use warnings;
-use Cwd;
-use Config;
 use File::Path qw(rmtree);
 use PostgreSQL::Test::Cluster;
 use PostgreSQL::Test::Utils;

src/bin/pg_verifybackup/t/005_bad_manifest.pl

@@ -6,8 +6,6 @@
 
 use strict;
 use warnings;
-use Cwd;
-use Config;
 use PostgreSQL::Test::Cluster;
 use PostgreSQL::Test::Utils;
 use Test::More;

src/bin/pg_verifybackup/t/006_encoding.pl

@@ -5,8 +5,6 @@
 
 use strict;
 use warnings;
-use Cwd;
-use Config;
 use PostgreSQL::Test::Cluster;
 use PostgreSQL::Test::Utils;
 use Test::More;

src/bin/pg_verifybackup/t/007_wal.pl

@@ -5,8 +5,6 @@
 
 use strict;
 use warnings;
-use Cwd;
-use Config;
 use File::Path qw(rmtree);
 use PostgreSQL::Test::Cluster;
 use PostgreSQL::Test::Utils;

src/bin/pg_verifybackup/t/008_untar.pl

@@ -7,7 +7,6 @@
 
 use strict;
 use warnings;
-use Config;
 use File::Path qw(rmtree);
 use PostgreSQL::Test::Cluster;
 use PostgreSQL::Test::Utils;

src/bin/pg_verifybackup/t/009_extract.pl

@@ -6,8 +6,6 @@
 
 use strict;
 use warnings;
-use Cwd;
-use Config;
 use File::Path qw(rmtree);
 use PostgreSQL::Test::Cluster;
 use PostgreSQL::Test::Utils;

src/bin/pg_verifybackup/t/010_client_untar.pl

@@ -6,7 +6,6 @@
 
 use strict;
 use warnings;
-use Config;
 use File::Path qw(rmtree);
 use PostgreSQL::Test::Cluster;
 use PostgreSQL::Test::Utils;

src/bin/pgbench/t/001_pgbench_with_server.pl

@@ -7,7 +7,6 @@ use warnings;
 use PostgreSQL::Test::Cluster;
 use PostgreSQL::Test::Utils;
 use Test::More;
-use Config;
 
 # start a pgbench specific server
 my $node = PostgreSQL::Test::Cluster->new('main');

src/test/modules/libpq_pipeline/t/001_libpq_pipeline.pl

@@ -4,7 +4,6 @@
 use strict;
 use warnings;
 
-use Config;
 use PostgreSQL::Test::Cluster;
 use PostgreSQL::Test::Utils;
 use Test::More;

src/test/modules/test_pg_dump/t/001_base.pl

@@ -4,7 +4,6 @@
 use strict;
 use warnings;
 
-use Config;
 use PostgreSQL::Test::Cluster;
 use PostgreSQL::Test::Utils;
 use Test::More;

src/test/perl/PostgreSQL/Test/Cluster.pm

@@ -93,7 +93,6 @@ use warnings;
 
 use Carp;
 use Config;
-use Cwd;
 use Fcntl qw(:mode);
 use File::Basename;
 use File::Path qw(rmtree);

src/test/recovery/t/011_crash_recovery.pl

@@ -9,7 +9,6 @@ use warnings;
 use PostgreSQL::Test::Cluster;
 use PostgreSQL::Test::Utils;
 use Test::More;
-use Config;
 
 my $node = PostgreSQL::Test::Cluster->new('primary');
 $node->init(allows_streaming => 1);

src/test/recovery/t/013_crash_restart.pl

@@ -16,7 +16,6 @@ use warnings;
 use PostgreSQL::Test::Cluster;
 use PostgreSQL::Test::Utils;
 use Test::More;
-use Config;
 
 my $psql_timeout = IPC::Run::timer($PostgreSQL::Test::Utils::timeout_default);
 

src/test/recovery/t/017_shm.pl

@@ -6,7 +6,6 @@
 #
 use strict;
 use warnings;
-use Config;
 use File::stat qw(stat);
 use IPC::Run 'run';
 use PostgreSQL::Test::Cluster;

src/test/recovery/t/020_archive_status.pl

@@ -9,7 +9,6 @@ use warnings;
 use PostgreSQL::Test::Cluster;
 use PostgreSQL::Test::Utils;
 use Test::More;
-use Config;
 
 my $primary = PostgreSQL::Test::Cluster->new('primary');
 $primary->init(

src/test/recovery/t/021_row_visibility.pl

@@ -9,7 +9,6 @@ use warnings;
 use PostgreSQL::Test::Cluster;
 use PostgreSQL::Test::Utils;
 use Test::More;
-use Config;
 
 # Initialize primary node
 my $node_primary = PostgreSQL::Test::Cluster->new('primary');