Remove all configuration variable documentation from configs/README.txt and Docuemntation/NuttXPortingGuidle.html. The current NuttX configuration is documented in Kconfig files and in Documentation/NuttXSonfigVariables.html. The older configuration variable documentation is not being maintained and, hence, is a liability

ChangeLog

@@ -6243,3 +6243,11 @@
 	* Kconfig and all Make.defs files:  Add CONFIG_DEBUG_NOOPT.  Now
 	  you can indepenently enable/disable debug symbols and optimization
 	  (2013-12-20).
+	* configs/README.txt and Documentation/NuttxPortingGuide.html:
+	  Remove documentation of NuttX configuration variables.  Since
+	  converting to the kconfig-frontend tools, the NuttX configuration
+	  is now documented in the Kconfig files and summarized in the
+	  autogenerated Documentation/NuttXConfigVariables.html file.
+	  This old configuration variable documentation is now a liability
+	  and, hence, was removed (2013-12-20).
+