board/m2k/msd/index.html: Remove link to Google+

Google+ is no longer available for consumer (personal) and brand accounts

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>

board/m2k/msd/index.html

@@ -330,7 +330,6 @@ <h3 id="about">About Analog Devices</h3>
 <a href="https://www.facebook.com/AnalogDevicesInc" title="Visit Analog Devices on Facebook"><img src="./img/fb.png" alt="FaceBook Logo"></a>
 <a href="https://twitter.com/#!/adi_news" title="Follow Analog Devices on Twitter"><img src="./img/tw.png" alt="Twitter Logo"></a>
 <a href="https://www.instagram.com/analogdevices/?hl=en" title="Follow Analog Devices on Instagram"><img src="./img/ig.png" alt="Instgram Logo"></a>
-<a href="https://plus.google.com/116502491843999760953/posts" title="Follow us on Google+"><img src="./img/gp.png" alt="Google+ Logo"></a>
 <a href="https://www.linkedin.com/company/3450" title="Join Analog Devices on LinkedIn"><img src="./img/li.png" alt="LinkedIn Logo"></a>
 <a href="https://www.youtube.com/user/AnalogDevicesInc" title="View Analog Devices on YouTube"><img src="./img/yt.png" alt="YouTube Logo"></a>
 <a href="https://www.weibo.com/analogdevices" title="Chinese language information on Sina Weibo"><img src="./img/sw.png" alt="Sina Weibo Logo"></a>