JDK 9 RFR of JDK-8149896: Remove unnecessary values in FloatConsts and DoubleConsts

[joe darcy]

Hello,

The the FloatConsts and DoubleConsts classes, while moved to an internal 
package recently (JDK-8145990), contain constants now available via the 
public API. All such uses of the redundant values should be removed as 
well as the redundant constants themselves.

A quick note on the 2d changes, several constants (and a copy from a 
package-private method from java.lang) were used to initialize a double 
value POWER_2_TO_32; this can be accomplished more directly using a 
hexadecimal floating-point literal.

Please review the webrev

     http://cr.openjdk.java.net/~darcy/8149896.0/

Thanks,

-Joe