Do not install .pc files for ncurses in chapter 6: they are not needed,

and it may generate errors if pkg-config is not installed on the host

git-svn-id: http://svn.linuxfromscratch.org/LFS/branches/cross2@11937 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

chapter06/ncurses.xml

@@ -68,8 +68,7 @@ popd</userinput></screen>
             --without-debug              \
             --without-ada                \
             --without-normal             \
-            --enable-widec               \
-            --enable-pc-files</userinput></screen>
+            --enable-widec</userinput></screen>
 
     <variablelist>
       <title>The meaning of the new configure options:</title>