Remove 'O-MATE', 'O-MANP', etc. (#1)

- Remove unintuitive 'O-...' labels & increment version to 1.2.0 (a9c1360b740c7cb1d5c624e1840b6ac501df37cc)

fabner.py

@@ -84,7 +84,7 @@ def map_fabner_labels(string_tag):
 class FabNER(datasets.GeneratorBasedBuilder):
     """FabNER is a manufacturing text corpus of 350,000+ words for Named Entity Recognition."""
 
-    VERSION = datasets.Version("1.1.0")
+    VERSION = datasets.Version("1.2.0")
 
     # This is an example of a dataset with multiple configurations.
     # If you don't want/need to define several sub-sets in your dataset,
@@ -133,7 +133,6 @@ class FabNER(datasets.GeneratorBasedBuilder):
                     [
                         "B-" + entity_type,
                         "I-" + entity_type,
-                        "O-" + entity_type,
                         "E-" + entity_type,
                         "S-" + entity_type,
                     ]