Avoid using NanoTime for compiler and verifier

Target timings before with -j2 --compiler-filter=interpret-only:
Approximate speedup 3%.

Before:
real    0m36.852s
real    0m36.050s
real    0m36.246s

After:
real    0m35.667s
real    0m35.779s
real    0m35.458s

Bug: 16853450

Change-Id: Id996172d8283639fe293ddfc26d01fc1a0beed0b
diff --git a/compiler/driver/compiler_driver.cc b/compiler/driver/compiler_driver.cc
index c1610c2..8a69c7e 100644
--- a/compiler/driver/compiler_driver.cc
+++ b/compiler/driver/compiler_driver.cc
@@ -61,7 +61,7 @@
 
 namespace art {
 
-static constexpr bool kTimeCompileMethod = !kIsDebugBuild;
+static constexpr bool kTimeCompileMethod = false;
 
 static double Percentage(size_t x, size_t y) {
   return 100.0 * (static_cast<double>(x)) / (static_cast<double>(x + y));
diff --git a/runtime/verifier/method_verifier.cc b/runtime/verifier/method_verifier.cc
index 0ee4414..2347825 100644
--- a/runtime/verifier/method_verifier.cc
+++ b/runtime/verifier/method_verifier.cc
@@ -47,7 +47,7 @@
 namespace art {
 namespace verifier {
 
-static constexpr bool kTimeVerifyMethod = !kIsDebugBuild;
+static constexpr bool kTimeVerifyMethod = false;
 static constexpr bool gDebugVerify = false;
 // TODO: Add a constant to method_verifier to turn on verbose logging?