Remove (almost) unused method from provisional IApiBaselineManager

The IApiBaselineManager contains a helper method
IApiBaselineManager#getWorkspaceComponent that is only used in one test.
The method has the drawback that one can't distinguish the case if no
baseline is set or the component is not found additionally it might
later depend on a disposed component.

Because of that the method is now removed and the single reference
changed accordingly.

apitools/org.eclipse.pde.api.tools.tests/src/org/eclipse/pde/api/tools/builder/tests/ApiBuilderTest.java

@@ -61,6 +61,7 @@
 import org.eclipse.pde.api.tools.internal.provisional.ApiPlugin;
 import org.eclipse.pde.api.tools.internal.provisional.IApiBaselineManager;
 import org.eclipse.pde.api.tools.internal.provisional.IApiMarkerConstants;
+import org.eclipse.pde.api.tools.internal.provisional.model.IApiBaseline;
 import org.eclipse.pde.api.tools.internal.provisional.model.IApiComponent;
 import org.eclipse.pde.api.tools.internal.provisional.problems.IApiProblemTypes;
 import org.eclipse.pde.api.tools.internal.util.Util;
@@ -1199,7 +1200,9 @@ protected static void exportProjects(IApiBaselineManager manager, IProject[] pro
 
 	private static void exportComponent(IApiBaselineManager manager, IPath baselineLocation, IProject currentProject,
 			int retry) throws Exception {
-		IApiComponent component = manager.getWorkspaceComponent(currentProject.getName());
+		IApiBaseline bl = manager.getWorkspaceBaseline();
+		assertNotNull("No Workspace baseline set", bl); //$NON-NLS-1$
+		IApiComponent component = bl.getApiComponent(currentProject.getName());
 		assertNotNull("The project was not found in the workspace baseline: " + currentProject.getName(), //$NON-NLS-1$
 				component);
 		try {

apitools/org.eclipse.pde.api.tools/src/org/eclipse/pde/api/tools/internal/ApiBaselineManager.java

@@ -706,12 +706,4 @@ private IApiBaseline createWorkspaceBaseline() throws CoreException {
 		return baseline;
 	}
 
-	@Override
-	public IApiComponent getWorkspaceComponent(String symbolicName) {
-		IApiBaseline baseline = getWorkspaceBaseline();
-		if (baseline != null) {
-			return baseline.getApiComponent(symbolicName);
-		}
-		return null;
-	}
 }

apitools/org.eclipse.pde.api.tools/src/org/eclipse/pde/api/tools/internal/provisional/IApiBaselineManager.java

@@ -14,7 +14,6 @@
 package org.eclipse.pde.api.tools.internal.provisional;
 
 import org.eclipse.pde.api.tools.internal.provisional.model.IApiBaseline;
-import org.eclipse.pde.api.tools.internal.provisional.model.IApiComponent;
 
 /**
  * Interface describing the {@link IApiBaselineManager}
@@ -98,12 +97,4 @@ public interface IApiBaselineManager {
 	 */
 	public IApiBaseline getWorkspaceBaseline();
 
-	/**
-	 * Returns the API component the workspace baseline with the given symbolic
-	 * name or <code>null</code> if none.
-	 *
-	 * @param symbolicName bundle symbolic name
-	 * @return API component from the workspace baseline or <code>null</code>
-	 */
-	public IApiComponent getWorkspaceComponent(String symbolicName);
 }