Revert of [builtins] Introduce proper Float64Exp operator.

test/unittests/base/ieee754-unittest.cc

Index: test/unittests/base/ieee754-unittest.cc
diff --git a/test/unittests/base/ieee754-unittest.cc b/test/unittests/base/ieee754-unittest.cc
index 7246ece3459f45ae092b9a79f2a554a41cb542e1..8ee69ec2661dad0c5b5c991a90a8863a642def45 100644
--- a/test/unittests/base/ieee754-unittest.cc
+++ b/test/unittests/base/ieee754-unittest.cc
@@ -52,23 +52,6 @@
   EXPECT_DOUBLE_EQ(-2.356194490192345,
                    atan2(-std::numeric_limits<double>::infinity(),
                          -std::numeric_limits<double>::infinity()));
-}
-
-TEST(Ieee754, Exp) {
-  EXPECT_THAT(exp(std::numeric_limits<double>::quiet_NaN()), IsNaN());
-  EXPECT_THAT(exp(std::numeric_limits<double>::signaling_NaN()), IsNaN());
-  EXPECT_EQ(0.0, exp(-std::numeric_limits<double>::infinity()));
-  EXPECT_EQ(std::numeric_limits<double>::infinity(),
-            exp(std::numeric_limits<double>::infinity()));
-  EXPECT_EQ(3.307553003638408e-308, exp(-708.0));
-  EXPECT_EQ(2.2250738585072626e-308, exp(-708.39641853226408));
-  EXPECT_EQ(0.36787944117144233, exp(-1.0));
-  EXPECT_EQ(1.0, exp(-0.0));
-  EXPECT_EQ(1.0, exp(0.0));
-  EXPECT_EQ(2.7182818284590455, exp(1.0));
-  EXPECT_EQ(2.6881171418161356e+43, exp(100.0));
-  EXPECT_EQ(8.218407461554972e+307, exp(709.0));
-  EXPECT_EQ(std::numeric_limits<double>::infinity(), exp(710.0));
 }
 
 TEST(Ieee754, Log) {