sim: clarify license text via COPYING file

The project has been using GPL v3 for a while now in the source files,
and the arm & ppc ports have carried a copy of the COPYING file.  Lets
move those up to the top sim dir like other projects to make it clear.

Also drop the ppc/COPYING.LIB as it's not really referenced by any
source as everything is GPL v3.

3 files changed, 0 insertions, 1155 deletions

diff --git a/sim/arm/COPYING b/sim/COPYING
index 94a9ed0..94a9ed0 100644
--- a/sim/arm/COPYING
+++ b/sim/COPYING
diff --git a/sim/ppc/COPYING b/sim/ppc/COPYING
deleted file mode 100644
index 94a9ed0..0000000
--- a/sim/ppc/COPYING
+++ /dev/null
@@ -1,674 +0,0 @@
-                    GNU GENERAL PUBLIC LICENSE
-                       Version 3, 29 June 2007
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diff --git a/sim/ppc/COPYING.LIB b/sim/ppc/COPYING.LIB
deleted file mode 100644
index eb685a5..0000000
--- a/sim/ppc/COPYING.LIB
+++ /dev/null
@@ -1,481 +0,0 @@
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