diff --git a/tests/ClientResolverTest.php b/tests/ClientResolverTest.php
index c712c146ab..86eb941b62 100644
--- a/tests/ClientResolverTest.php
+++ b/tests/ClientResolverTest.php
@@ -1697,168 +1697,4 @@ public function testEmitsDeprecationWarning()
             putenv('AWS_SUPPRESS_PHP_DEPRECATION_WARNING=true');
         }
     }
-
-    /**
-     * @dataProvider defaultRegionUseAwsSharedFileProvider
-     *
-     * @param $args
-     * @param $region
-     * @param $expected
-     * @return void
-     */
-    public function testDefaultRegionHonorUseAwsSharedFiles(
-        $args,
-        $region,
-        $expected
-    ): void
-    {
-        $tempHomeDir = sys_get_temp_dir() . "/default_region_test";
-        $awsDir = $tempHomeDir . "/.aws";
-        if (!is_dir($awsDir)) {
-            mkdir($tempHomeDir, 0777, true);
-            mkdir($awsDir, 0777, true);
-        }
-        $configPath = $awsDir . "/config";
-        $config = <<<EOF
-[default]
-region=$region
-EOF;
-        $currentEnvConfigFile = getenv(ConfigurationResolver::ENV_CONFIG_FILE);
-        putenv(
-            ConfigurationResolver::ENV_CONFIG_FILE
-            . "="
-            . $configPath
-        );
-        try {
-            file_put_contents($configPath, $config);
-            $resolvedRegion = ClientResolver::_default_region($args);
-
-            $this->assertEquals($expected, $resolvedRegion);
-        } finally {
-            if ($currentEnvConfigFile) {
-                putenv(
-                    ConfigurationResolver::ENV_CONFIG_FILE
-                    . "="
-                    . $currentEnvConfigFile
-                );
-            } else {
-                putenv(ConfigurationResolver::ENV_CONFIG_FILE);
-            }
-            unlink($configPath);
-            rmdir($awsDir);
-            rmdir($tempHomeDir);
-        }
-    }
-
-    /**
-     * @return array[]
-     */
-    public function defaultRegionUseAwsSharedFileProvider(): array
-    {
-        $configRegion = 'test-region';
-
-        return [
-            'expect_region' => [
-                'args' => [
-                    'use_aws_shared_config_files' => true,
-                ],
-                'region' => $configRegion,
-                'expected' => $configRegion
-            ],
-            'expect_region_when_flag_not_present' => [
-                'args' => [
-                ],
-                'region' => $configRegion,
-                'expected' => $configRegion
-            ],
-            'expect_region_to_be_empty' => [
-                'args' => [
-                    'use_aws_shared_config_files' => false,
-                ],
-                'region' => $configRegion,
-                'expected' => '' // empty
-            ]
-        ];
-    }
-
-    /**
-     * @dataProvider defaultSigv4aSigningRegionSetUseAwsSharedFileProvider
-     *
-     * @param $args
-     * @param $sigv4aSigningRegionSet
-     * @param $expected
-     * @return void
-     */
-    public function testDefaultSigv4aSigningRegionSetHonorUseAwsSharedFiles(
-        $args,
-        $sigv4aSigningRegionSet,
-        $expected
-    ): void
-    {
-        $tempHomeDir = sys_get_temp_dir() . "/default_sigv4a_signing_region_set_test";
-        $awsDir = $tempHomeDir . "/.aws";
-        if (!is_dir($awsDir)) {
-            mkdir($tempHomeDir, 0777, true);
-            mkdir($awsDir, 0777, true);
-        }
-        $configPath = $awsDir . "/config";
-        $config = <<<EOF
-[default]
-sigv4a_signing_region_set=$sigv4aSigningRegionSet
-EOF;
-        $currentEnvConfigFile = getenv(ConfigurationResolver::ENV_CONFIG_FILE);
-        putenv(
-            ConfigurationResolver::ENV_CONFIG_FILE
-            . "="
-            . $configPath
-        );
-        try {
-            file_put_contents($configPath, $config);
-            $resolved =
-                ClientResolver::_default_sigv4a_signing_region_set($args);
-
-            $this->assertEquals($expected, $resolved);
-        } finally {
-            if ($currentEnvConfigFile) {
-                putenv(
-                    ConfigurationResolver::ENV_CONFIG_FILE
-                    . "="
-                    . $currentEnvConfigFile
-                );
-            } else {
-                putenv(ConfigurationResolver::ENV_CONFIG_FILE);
-            }
-            unlink($configPath);
-            rmdir($awsDir);
-            rmdir($tempHomeDir);
-        }
-    }
-
-    public function defaultSigv4aSigningRegionSetUseAwsSharedFileProvider(): array
-    {
-        $configSigv4aSigningRegionSet = 'test-sigv4-signing-region-set';
-
-        return [
-            'expect_sigv4a_signing_region_set' => [
-                'args' => [
-                    'use_aws_shared_config_files' => true,
-                ],
-                'sigv4a_signing_region_set' => $configSigv4aSigningRegionSet,
-                'expected' => $configSigv4aSigningRegionSet
-            ],
-            'expect_sigv4a_signing_region_set_when_flag_not_present' => [
-                'args' => [
-                ],
-                'sigv4a_signing_region_set' => $configSigv4aSigningRegionSet,
-                'expected' => $configSigv4aSigningRegionSet
-            ],
-            'eexpect_sigv4a_signing_region_set_to_be_empty' => [
-                'args' => [
-                    'use_aws_shared_config_files' => false,
-                ],
-                'sigv4a_signing_region_set' => $configSigv4aSigningRegionSet,
-                'expected' => '' // empty
-            ]
-        ];
-    }
 }