wireshark: update help text

Since commit 00be67d84696 (wireshark: enable GUI options, 2015-12-02) the GUI
is enabled when the required libraries are present. Update the config help
text accordingly.

Cc: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Acked-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/wireshark/Config.in

@@ -6,8 +6,7 @@ config BR2_PACKAGE_WIRESHARK
 	depends on BR2_USE_WCHAR # glib2
 	depends on BR2_TOOLCHAIN_HAS_THREADS # glib2
 	help
-	  Network traffic sniffer and protocol decoder. Currently only tshark,
-	  the console interface, is enabled.
+	  Network traffic sniffer and protocol decoder.
 
 	  http://www.wireshark.org