ART: Remove unused asm definition

CL 331207 added a jit constant to be used in assembly, but ended
up not using it.  Removed here.

Test: m test-art-host
Change-Id: Ibc558f92a66a6bce27982b5cfadf39db7258b991
diff --git a/tools/cpp-define-generator/constant_jit.def b/tools/cpp-define-generator/constant_jit.def
index 82cdbb2..5fa5194 100644
--- a/tools/cpp-define-generator/constant_jit.def
+++ b/tools/cpp-define-generator/constant_jit.def
@@ -25,6 +25,5 @@
 
 DEFINE_JIT_CONSTANT(CHECK_OSR,       int16_t, art::jit::kJitCheckForOSR)
 DEFINE_JIT_CONSTANT(HOTNESS_DISABLE, int16_t, art::jit::kJitHotnessDisabled)
-DEFINE_JIT_CONSTANT(CHECK_OSR_THRESHOLD, int16_t, art::jit::Jit::kJitRecheckOSRThreshold)
 
 #undef DEFINE_JIT_CONSTANT