Stop definining CRT_LDBL_128BIT.

Bug: http://b/26987366

Compiler-rt now defines this in a separate header file for MIPS64.

(cherry picked from commit 69026259ec32fae6bae3e630aa148272334f44e8)

Change-Id: Icf8d30833a91a60508a1b58f692ae95fb10c8ce9
1 file changed