gcc: Remove notes that mpfr-dev and the like are needed on the build machine.

That's not true, at least for GCC 4.6.3.

Signed-off-by: Christian Beier <dontmind@freeshell.org>

devel/gcc/Makefile

@@ -5,9 +5,7 @@
 # See /LICENSE for more information.
 #
 #
-# NB: GCC building is a bit special, you need to have the gcc build-deps installed on the build machine as well,
-#     for instance mpfr, mpc and gmp development packages!
-#
+
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=gcc

devel/gcc/README

@@ -1,9 +1,8 @@
 Native GCC that runs on target.
 
-Note that building this one is a bit tricky. First and foremost, your build machine
-needs to have the gcc build-deps installed as well, i.e. mpfr, gmp and mpc, amongst
-others.
+To save disk space, this GCC only supports dynamic linking on the target box,
+there are no static libraries shipped.
 
-For now, this was only tested for a mips target. Others to be done...
+For now, this was only tested on a mips target. Others to be done...
 
-Christian Beier <cb@shoutrlabs.com>
+   Christian Beier <cb@shoutrlabs.com>