RFR(T) : 8250739 : remove Compile::Generate_*_Graph methods declarations

[Igor Ignatyev]

http://cr.openjdk.java.net/~iignatyev//8250739/webrev.00/
> 8 lines changed: 0 ins; 8 del; 0 mod;

Hi all,

could you please review this trivial cleanup?

from JBS:
> Compile::Generate_Compiled_To_Interpreter_Graph and Generate_Interpreter_To_Compiled_Graph methods are declared but not defined (and not used)

webrev: http://cr.openjdk.java.net/~iignatyev//8250739/webrev.00/
JBS: https://bugs.openjdk.java.net/browse/JDK-8250739

Thanks,
-- Igor