MAINTAINERS: change UBI/UBIFS git tree URLs

Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>

MAINTAINERS

@@ -4192,7 +4192,7 @@ M:	dedekind@infradead.org
 P:	Adrian Hunter
 M:	ext-adrian.hunter@nokia.com
 L:	linux-mtd@lists.infradead.org
-T:	git git://git.infradead.org/~dedekind/ubifs-2.6.git
+T:	git git://git.infradead.org/ubifs-2.6.git
 W:	http://www.linux-mtd.infradead.org/doc/ubifs.html
 S:	Maintained
 
@@ -4246,7 +4246,7 @@ P:	Artem Bityutskiy
 M:	dedekind@infradead.org
 W:	http://www.linux-mtd.infradead.org/
 L:	linux-mtd@lists.infradead.org
-T:	git git://git.infradead.org/~dedekind/ubi-2.6.git
+T:	git git://git.infradead.org/ubi-2.6.git
 S:	Maintained
 
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