clean up experimental setup and keep using ffast-math flag

Summary: Remove experimental setup of fast-math and add `-ffast-math` as a compiler flag for yoga.

Reviewed By: emilsjolander

Differential Revision: D7414228

fbshipit-source-id: 320e1b1953f6af867b13e617af7872eb8999160e

java/BUCK

@@ -28,29 +28,6 @@ cxx_library(
     ],
 )
 
-cxx_library(
-    name = "jniFastMath",
-    srcs = glob(["jni/*.cpp"]),
-    header_namespace = "",
-    compiler_flags = [
-        "-fno-omit-frame-pointer",
-        "-fexceptions",
-        "-fPIC",
-        "-Wall",
-        "-Werror",
-        "-O3",
-        "-std=c++11",
-    ],
-    platforms = ANDROID,
-    soname = "libyogafastmath.$(ext)",
-    visibility = ["PUBLIC"],
-    deps = [
-        FBJNI_TARGET,
-        JNI_TARGET,
-        yoga_dep(":yogafastmath"),
-    ],
-)
-
 java_library(
     name = "java",
     srcs = glob(["com/facebook/yoga/*.java"]),
@@ -63,7 +40,6 @@ java_library(
     visibility = ["PUBLIC"],
     deps = [
         ":jni",
-        ":jniFastMath",
         INFER_ANNOTATIONS_TARGET,
         JSR_305_TARGET,
         PROGRUARD_ANNOTATIONS_TARGET,