Remove SK_SCALAR_IS_FLOAT checks, they are always true

SkScalar used to be float or double (or fixed) but has been float
only since 2017
https://github.com/google/skia/commit/529bcd6db7ebfa3a9e4898696cfc869839045176

Bug: skbug.com/13983
Bug: 178700363
Change-Id: I822ad61e6522e7c0757905b7d0d1b4da920c418f
(cherry picked from commit ceb226900957b8c5af99b497226ba42296475e1b)
Merged-In: I822ad61e6522e7c0757905b7d0d1b4da920c418f
diff --git a/libs/hwui/jni/Shader.cpp b/libs/hwui/jni/Shader.cpp
index 8a0db1c..75d45e5 100644
--- a/libs/hwui/jni/Shader.cpp
+++ b/libs/hwui/jni/Shader.cpp
@@ -52,12 +52,7 @@
 static jint Color_HSVToColor(JNIEnv* env, jobject, jint alpha, jfloatArray hsvArray)
 {
     AutoJavaFloatArray  autoHSV(env, hsvArray, 3);
-#ifdef SK_SCALAR_IS_FLOAT
-    SkScalar*   hsv = autoHSV.ptr();
-#else
-    #error Need to convert float array to SkScalar array before calling the following function.
-#endif
-
+    SkScalar* hsv = autoHSV.ptr();
     return static_cast<jint>(SkHSVToColor(alpha, hsv));
 }
 
@@ -149,11 +144,7 @@
     std::vector<SkColor4f> colors = convertColorLongs(env, colorArray);
 
     AutoJavaFloatArray autoPos(env, posArray, colors.size());
-#ifdef SK_SCALAR_IS_FLOAT
     SkScalar* pos = autoPos.ptr();
-#else
-    #error Need to convert float array to SkScalar array before calling the following function.
-#endif
 
     sk_sp<SkShader> shader(SkGradientShader::MakeLinear(pts, &colors[0],
                 GraphicsJNI::getNativeColorSpace(colorSpaceHandle), pos, colors.size(),
@@ -193,11 +184,7 @@
     std::vector<SkColor4f> colors = convertColorLongs(env, colorArray);
 
     AutoJavaFloatArray autoPos(env, posArray, colors.size());
-#ifdef SK_SCALAR_IS_FLOAT
     SkScalar* pos = autoPos.ptr();
-#else
-    #error Need to convert float array to SkScalar array before calling the following function.
-#endif
 
     auto colorSpace = GraphicsJNI::getNativeColorSpace(colorSpaceHandle);
     auto skTileMode = static_cast<SkTileMode>(tileMode);
@@ -225,11 +212,7 @@
     std::vector<SkColor4f> colors = convertColorLongs(env, colorArray);
 
     AutoJavaFloatArray autoPos(env, jpositions, colors.size());
-#ifdef SK_SCALAR_IS_FLOAT
     SkScalar* pos = autoPos.ptr();
-#else
-    #error Need to convert float array to SkScalar array before calling the following function.
-#endif
 
     sk_sp<SkShader> shader = SkGradientShader::MakeSweep(x, y, &colors[0],
             GraphicsJNI::getNativeColorSpace(colorSpaceHandle), pos, colors.size(),