Revert "Improve message for glossary error"

This reverts commit 0b370670.

tools/check

@@ -426,14 +426,13 @@ class ReferencePageValidator(MarkdownValidator):
         ```definition_lists``` extension.
 
         That syntax isn't supported by the CommonMark parser, so we identify
-        terms manually."""
-        glossary_keyword = glossary_entry[0]
+         terms manually."""
         if len(glossary_entry) < 2:
             logging.error(
                     "In {0}:"
-                    "Glossary entry \"{}\" must have at least two lines- "
+                    "Glossary entry must have at least two lines- "
                     "a term and a definition.".format(
-                        glossary_keyword, self.filename))
+                        self.filename))
             return False
 
         entry_is_valid = True
@@ -442,19 +441,17 @@ class ReferencePageValidator(MarkdownValidator):
                 if not re.match("^:   ", line):
                     logging.error(
                             "In {0}:"
-                            "At glossary entry \"{}\" "
                             "First line of definition must "
                             "start with ':    '.".format(
-                                glossary_keyword, self.filename))
+                                self.filename))
                     entry_is_valid = False
             elif line_index > 1:
                 if not re.match("^    ", line):
                     logging.error(
                             "In {0}:"
-                            "At glossary entry \"{}\" "
                             "Subsequent lines of definition must "
                             "start with '     '.".format(
-                                glossary_keyword, self.filename))
+                                self.filename))
                     entry_is_valid = False
         return entry_is_valid