Remove the mysql_odbc_escape_string() function. The function
has multi-byte character escaping issues, doesn't honor the
NO_BACKSLASH_ESCAPES mode and is not used anymore by the
Connector/ODBC as of 3.51.17.


include/mysql.h:
  Remove mysql_odbc_escape_string() prototype.
include/mysql_h.ic:
  Update abi check file, mostly line changes and mysql_odbc_escape_string
  removal.
libmysql/libmysql.c:
  Remove mysql_odbc_escape_string() body.
libmysql/libmysql.def:
  Remove mysql_odbc_escape_string()
libmysqld/libmysqld.def:
  Remove mysql_odbc_escape_string()