[LookUp] With npy type being float we can use parent class method for read_npy_data

Author: auphelia

src/finn/custom_op/fpgadataflow/hls/lookup_hls.py

@@ -88,31 +88,6 @@ def defines(self, var):
             my_defines.append("#define EmbeddingType %s" % emb_hls_type)
         self.code_gen_dict["$DEFINES$"] = my_defines
 
-    def read_npy_data(self):
-        code_gen_dir = self.get_nodeattr("code_gen_dir_cppsim")
-        dtype = self.get_input_datatype()
-        if dtype == DataType["BIPOLAR"]:
-            # use binary for bipolar storage
-            dtype = DataType["BINARY"]
-        elem_bits = dtype.bitwidth()
-        packed_bits = self.get_instream_width()
-        packed_hls_type = "ap_uint<%d>" % packed_bits
-        elem_hls_type = dtype.get_hls_datatype_str()
-        npy_type = "float"
-        npy_in = "%s/input_0.npy" % code_gen_dir
-        self.code_gen_dict["$READNPYDATA$"] = []
-        self.code_gen_dict["$READNPYDATA$"].append(
-            'npy2apintstream<%s, %s, %d, %s>("%s", in0_%s);'
-            % (
-                packed_hls_type,
-                elem_hls_type,
-                elem_bits,
-                npy_type,
-                npy_in,
-                self.hls_sname(),
-            )
-        )
-
     def dataoutstrm(self):
         code_gen_dir = self.get_nodeattr("code_gen_dir_cppsim")
         dtype = self.get_output_datatype()