linux: drop full stop from prompt text

We don't add a full stop at the end of the prompt text.

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

linux/Config.in

@@ -368,7 +368,7 @@ choice
 	default BR2_LINUX_KERNEL_USE_INTREE_DTS
 
 config BR2_LINUX_KERNEL_USE_INTREE_DTS
-	bool "Use a device tree present in the kernel."
+	bool "Use a device tree present in the kernel"
 	help
 	  Use a device tree source distributed with
 	  the kernel sources. The dts files are located