Remove snapshot.commit

The file is not referenced anywhere.
To display a change log we have the 'git log' command.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/snapshot.commit b/snapshot.commit
deleted file mode 100644
index 8d26309..0000000
--- a/snapshot.commit
+++ /dev/null
@@ -1 +0,0 @@
-$Format:%H  %cD$