refactor(Namespace): Remove sniff already covered by Generic.WhiteSpace.LanguageConstructSpacing (#3556857)

Author: klausi

.github/workflows/testing.yml

@@ -98,4 +98,5 @@ jobs:
           sed -i 's/DrupalPractice.CodeAnalysis.VariableAnalysis/VariableAnalysis.CodeAnalysis.VariableAnalysis/g' phpcs.xml.dist
           find .. -type f -name "*.php" -exec sed -i 's#// phpcs:ignore DrupalPractice.CodeAnalysis.VariableAnalysis#// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis#g' {} +
           sed -i 's/Drupal.Methods.MethodDeclaration/PSR2.Methods.MethodDeclaration/g' phpcs.xml.dist
+          sed -i '/<rule ref="Drupal.WhiteSpace.Namespace"\/>/d' phpcs.xml.dist
           ../../vendor/bin/phpcs -p -s --parallel=$(nproc) --ignore=lib/Drupal/Core/Command/GenerateTheme.php,modules/mysql/tests/src/Kernel/mysql/Console/DbDumpCommandTest.php,modules/big_pipe/tests/modules/big_pipe_test/src/BigPipePlaceholderTestCases.php,tests/fixtures/plugins/CustomPlugin.php,modules/package_manager/tests/modules/package_manager_test_api/src/ApiController.php

coder_sniffer/Drupal/Sniffs/WhiteSpace/NamespaceSniff.php

@@ -383,6 +383,11 @@ protected function getErrorList(string $testFile): array
                 16 => 1,
                 31 => 1,
             ];
+        case 'NamespaceUnitTest.inc':
+            return [
+                1 => 1,
+                3 => 1,
+            ];
         case 'UnusedUseStatementUnitTest.inc':
             return [
                 5  => 1,