Revert "Fix Double.toString() for a tie case"

Reverting because I probably misidentified the algorithm and there is
equivalent native code that would need to change in
java_lang_RealToString.cpp.

This reverts commit 75a2f70d97318bf7f160bbc8051f6abd1b841488.

Change-Id: Ice913dd887591e3d0767d703e9943c41e437efaa
2 files changed