remove duplicate class

test/groovy/ProjectSource.groovy

@@ -1,39 +0,0 @@
-import com.lesfurets.jenkins.unit.global.lib.SourceRetriever
-
-import groovy.transform.CompileStatic
-import groovy.transform.Immutable
-
-/**
- * Retrieves the shared lib sources of the current project which are expected to be
- * at the default location "./vars".
- */
-
-@Immutable
-@CompileStatic
-class ProjectSource implements SourceRetriever {
-
-    String sourceURL
-
-    /*
-     * None of the parameters provided in the signature are used in the use-case of that retriever.
-     */
-    @Override
-    List<URL> retrieve(String repository, String branch, String targetPath) {
-        def sourceDir = new File(sourceURL)
-        if (sourceDir.exists()) {
-            return [sourceDir.getAbsoluteFile().toURI().toURL()]
-        }
-        throw new IllegalStateException("Directory $sourceDir.path does not exists")
-    }
-
-    static ProjectSource projectSource(String sourceDir = '.') {
-        new ProjectSource(sourceDir)
-    }
-
-    @Override
-    String toString() {
-        return "${getClass().getSimpleName()}{" +
-                        "sourceURL='" + sourceURL + '\'' +
-                        '}'
-    }
-}