[DRE-maint] ruby-odbc is marked for autoremoval from testing

[Debian testing autoremoval watch]

ruby-odbc 0.99995-2 is marked for autoremoval from testing on 2018-03-02

It is affected by these RC bugs:
889025: ruby-odbc: FTBFS with ruby2.5: invalid operands to binary / (have 'char *' and 'char *')