Remove files generated by libtool (#1329)

It looks like those files were added accidentally
in commit fc6a390.
Add them to .gitignore to avoid that from now on.

Signed-off-by: Stefan Weil <[email protected]>

Author: stweil

.gitignore

@@ -53,6 +53,11 @@ training/unicharset_extractor
 training/wordlist2dawg
 *.patch
 
+# files generated by libtool
+/training/combine_lang_model
+/training/lstmeval
+/training/lstmtraining
+
 # ignore compilation files
 build/*
 /bin