Remove Unused Deprecated Classes and Constant

Author: SougandhS

debug/org.eclipse.core.externaltools/src/org/eclipse/core/externaltools/internal/IExternalToolConstants.java

@@ -126,12 +126,6 @@ public interface IExternalToolConstants {
 
 	// ------- Common External Tool Launch Configuration Attributes -------
 
-	/**
-	 * Boolean attribute indicating if external tool output should be captured.
-	 * Default value is <code>false</code>.
-	 * @deprecated since 3.1 Replaced by <code>org.eclipse.debug.core.DebugPlugin.ATTR_CAPTURE_OUTPUT</code>
-	 */
-	@Deprecated String ATTR_CAPTURE_OUTPUT = UI_PLUGIN_ID + ".ATTR_CAPTURE_OUTPUT"; //$NON-NLS-1$
 	/**
 	 * String attribute identifying the location of an external. Default value
 	 * is <code>null</code>. Encoding is tool specific.