MAINTAINERS: update STi maintainer list

Remove myself as STi maintainer as I will no longer have access to
STi platforms, and remove Srini too, who now works on other
platforms.

Patrice will manage the pull requests.
Signed-off-by: Maxime Coquelin <maxime.coquelin@st.com>
Cc: Patrice Chotard <patrice.chotard@st.com>
Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

MAINTAINERS

@@ -1690,8 +1690,6 @@ S:	Maintained
 F:	drivers/edac/altera_edac.
 
 ARM/STI ARCHITECTURE
-M:	Srinivas Kandagatla <srinivas.kandagatla@gmail.com>
-M:	Maxime Coquelin <maxime.coquelin@st.com>
 M:	Patrice Chotard <patrice.chotard@st.com>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 L:	kernel@stlinux.com