cleanup, unused error mesages

sql/share/errmsg-utf8.txt

@@ -3962,7 +3962,7 @@ ER_NEW_ABORTING_CONNECTION 08S01
         spa "Abortada conexión %ld para db: '%-.192s' usuario: '%-.48s' servidor: '%-.64s' (%-.64s)"
         swe "Avbröt länken för tråd %ld till db '%-.192s', användare '%-.48s', host '%-.64s' (%-.64s)"
         ukr "Перервано з'єднання %ld до бази данних: '%-.192s' користувач: '%-.48s' хост: '%-.64s' (%-.64s)"
-ER_unused_2
+ER_UNUSED_10
         eng "You should never see it"
 ER_FLUSH_MASTER_BINLOG_CLOSED  
         eng "Binlog closed, cannot RESET MASTER"
@@ -5879,10 +5879,9 @@ ER_EVENT_NEITHER_M_EXPR_NOR_M_AT
         ger "Kein DATETIME-Ausdruck angegeben"
 
 ER_UNUSED_2
-        eng ""
-
+        eng "You should never see it"
 ER_UNUSED_3
-        eng ""
+        eng "You should never see it"
 ER_EVENT_CANNOT_DELETE
         eng "Failed to delete the event from mysql.event"
         ger "Löschen des Events aus mysql.event fehlgeschlagen"
@@ -5910,7 +5909,7 @@ ER_CANT_LOCK_LOG_TABLE
         eng "You can't use locks with log tables."
         ger "Log-Tabellen können nicht gesperrt werden."
 ER_UNUSED_4
-        eng ""
+        eng "You should never see it"
 ER_COL_COUNT_DOESNT_MATCH_PLEASE_UPDATE
         eng "Column count of mysql.%s is wrong. Expected %d, found %d. Created with MariaDB %d, now running %d. Please use mysql_upgrade to fix this error."
         ger "Spaltenanzahl von mysql.%s falsch. %d erwartet, aber %d erhalten. Erzeugt mit MariaDB %d, jetzt unter %d. Bitte benutzen Sie mysql_upgrade, um den Fehler zu beheben"
@@ -6090,8 +6089,8 @@ ER_TRG_CANT_OPEN_TABLE
 ER_CANT_CREATE_SROUTINE
   eng "Cannot create stored routine `%-.64s`. Check warnings"
   ger "Kann gespeicherte Routine `%-.64s` nicht erzeugen. Beachten Sie die Warnungen"
-ER_UNUSED
-  eng ""
+ER_UNUSED_11
+        eng "You should never see it"
 ER_NO_FORMAT_DESCRIPTION_EVENT_BEFORE_BINLOG_STATEMENT
   eng "The BINLOG statement of type `%s` was not preceded by a format description BINLOG statement."
   ger "Der BINLOG-Anweisung vom Typ `%s` ging keine BINLOG-Anweisung zur Formatbeschreibung voran."
@@ -6459,7 +6458,7 @@ ER_BINLOG_UNSAFE_INSERT_TWO_KEYS
 ER_TABLE_IN_FK_CHECK
   eng "Table is being used in foreign key check."
 
-ER_unused_1
+ER_UNUSED_1
   eng "You should never see it"
 
 ER_BINLOG_UNSAFE_AUTOINC_NOT_FIRST
@@ -6529,7 +6528,7 @@ ER_ROW_DOES_NOT_MATCH_GIVEN_PARTITION_SET
   swe "Hittade en rad som inte passar i någon given partition"
 
 ER_UNUSED_5
-  eng ""
+  eng "You should never see it"
 
 ER_CHANGE_RPL_INFO_REPOSITORY_FAILURE
   eng "Failure while changing the type of replication repository: %s."
@@ -6995,11 +6994,11 @@ ER_UNKNOWN_OPTION
 ER_BAD_OPTION_VALUE
   eng "Incorrect value '%-.64s' for option '%-.64s'"
 ER_UNUSED_6
-  eng ""
+  eng "You should never see it"
 ER_UNUSED_7
-  eng ""
+  eng "You should never see it"
 ER_UNUSED_8
-  eng ""
+  eng "You should never see it"
 ER_DATA_OVERFLOW 22003
         eng "Got overflow when converting '%-.128s' to %-.32s. Value truncated."
 ER_DATA_TRUNCATED 22003
@@ -7024,8 +7023,8 @@ ER_VIEW_ORDERBY_IGNORED
         eng "View '%-.192s'.'%-.192s' ORDER BY clause ignored because there is other ORDER BY clause already."
 ER_CONNECTION_KILLED 70100 
         eng "Connection was killed"
-ER_UNSED 
-        eng "Internal error: '%-.192s'"
+ER_UNUSED_12
+        eng "You should never see it"
 ER_INSIDE_TRANSACTION_PREVENTS_SWITCH_SKIP_REPLICATION
         eng "Cannot modify @@session.skip_replication inside a transaction"
 ER_STORED_FUNCTION_PREVENTS_SWITCH_SKIP_REPLICATION