FP16 vbinary and gemm microkernel testers remove scalar variant

PiperOrigin-RevId: 311197089
diff --git a/test/vbinary-microkernel-tester.h b/test/vbinary-microkernel-tester.h
index 38846ca..132ee51 100644
--- a/test/vbinary-microkernel-tester.h
+++ b/test/vbinary-microkernel-tester.h
@@ -91,7 +91,7 @@
     return this->iterations_;
   }
 
-  void Test(xnn_f16_vbinary_ukernel_function vbinary, OpType op_type, Variant variant = Variant::Native) const {
+  void Test(xnn_f16_vbinary_ukernel_function vbinary, OpType op_type) const {
     std::random_device random_device;
     auto rng = std::mt19937(random_device());
     auto f32rng = std::bind(std::uniform_real_distribution<float>(0.01f, 1.0f), rng);
@@ -147,7 +147,7 @@
     }
   }
 
-  void Test(xnn_f16_vbinary_minmax_ukernel_function vbinary_minmax, OpType op_type, Variant variant = Variant::Native) const {
+  void Test(xnn_f16_vbinary_minmax_ukernel_function vbinary_minmax, OpType op_type) const {
     std::random_device random_device;
     auto rng = std::mt19937(random_device());
     auto f32rng = std::bind(std::uniform_real_distribution<float>(0.01f, 1.0f), rng);
@@ -206,8 +206,7 @@
       }
 
       // Prepare output parameters.
-      xnn_f16_minmax_params params = { };
-      params = xnn_init_f16_minmax_params(
+      xnn_f16_minmax_params params = xnn_init_f16_minmax_params(
         fp16_ieee_from_fp32_value(y_min),
         fp16_ieee_from_fp32_value(y_max));