lp_data: remove model_reader

Author: Mizux

ortools/linear_solver/BUILD.bazel

@@ -404,7 +404,6 @@ cc_binary(
         "//ortools/base",
         "//ortools/base:file",
         "//ortools/lp_data:lp_parser",
-        "//ortools/lp_data:model_reader",
         "//ortools/lp_data:mps_reader",
         "//ortools/lp_data:sol_reader",
         "@abseil-cpp//absl/status",

ortools/lp_data/BUILD.bazel

@@ -323,22 +323,6 @@ cc_library(
     ],
 )
 
-cc_library(
-    name = "model_reader",
-    srcs = ["model_reader.cc"],
-    hdrs = ["model_reader.h"],
-    deps = [
-        ":lp_data",
-        ":mps_reader",
-        ":proto_utils",
-        #        "//net/proto2/util/public:differencer",
-        "//ortools/base",
-        "//ortools/base:file",
-        "//ortools/linear_solver:linear_solver_cc_proto",
-        "//ortools/util:file_util",
-    ],
-)
-
 cc_library(
     name = "lp_decomposer",
     srcs = ["lp_decomposer.cc"],