Revert "Use SubMonintor in TextChange"

This reverts commit 2f68c39.

Author: jukzi

bundles/org.eclipse.ltk.core.refactoring/src/org/eclipse/ltk/core/refactoring/TextChange.java

@@ -247,6 +247,7 @@ public Change perform(IProgressMonitor pm) throws CoreException {
 			throw Changes.asCoreException(e);
 		} finally {
 			releaseDocument(document, subMon.newChild(1));
+			subMon.done();
 		}
 	}
 
@@ -310,6 +311,7 @@ public IDocument getCurrentDocument(IProgressMonitor pm) throws CoreException {
 		} finally {
 			releaseDocument(result, subMon.newChild(1));
 		}
+		subMon.done();
 		return result;
 	}