Cleanup Repository.create()

This method doesn't need to be synchronized, as its only a proxy to
create(boolean), which is the real worker.  While we are touching
it try to improve the Javadoc and whitespace nearby.

Change-Id: Ibdddec6e518ca6d7439cfad90fedfcdc2d6b7a2e
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

org.eclipse.jgit/src/org/eclipse/jgit/lib/Repository.java

@@ -327,15 +327,16 @@ public class Repository {
 		}
 	}
 
-
 	/**
-	 * Create a new Git repository initializing the necessary files and
-	 * directories. Repository with working tree is created using this method.
+	 * Create a new Git repository.
+	 * <p>
+	 * Repository with working tree is created using this method. This method is
+	 * the same as {@code create(false)}.
 	 *
 	 * @throws IOException
 	 * @see #create(boolean)
 	 */
-	public synchronized void create() throws IOException {
+	public void create() throws IOException {
 		create(false);
 	}