powerpc: ppc4xx: remove W7OLMC/W7OLMG board support

They have not been converted to Generic Board, so should be removed.
(See doc/README.generic-board for details.)

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Erik Theisen <etheisen@mindspring.com>
diff --git a/doc/README.scrapyard b/doc/README.scrapyard
index e3c4e2c..c416f3a 100644
--- a/doc/README.scrapyard
+++ b/doc/README.scrapyard
@@ -12,6 +12,8 @@
 
 Board            Arch        CPU            Commit      Removed     Last known maintainer/contact
 =================================================================================================
+W7OLMC           powerpc     ppc4xx         -           -           Erik Theisen <etheisen@mindspring.com>
+W7OLMG           powerpc     ppc4xx         -           -           Erik Theisen <etheisen@mindspring.com>
 aev              powerpc     mpc5xxx        -           -
 TB5200           powerpc     mpc5xxx        -           -
 JSE              powerpc     ppc4xx         -           -           Stephen Williams <steve@icarus.com>