Revert "Add bazel target for benchmark_release (#1078)" (#1081)

BUILD.bazel

@@ -10,8 +10,8 @@ config_setting(
     visibility = [":__subpackages__"],
 )
 
-filegroup(
-    name = "benchmark_srcs",
+cc_library(
+    name = "benchmark",
     srcs = glob(
         [
             "src/*.cc",
@@ -19,25 +19,7 @@ filegroup(
         ],
         exclude = ["src/benchmark_main.cc"],
     ),
-)
-
-cc_library(
-    name = "benchmark",
-    srcs = [":benchmark_srcs"],
-    hdrs = ["include/benchmark/benchmark.h"],
-    linkopts = select({
-        ":windows": ["-DEFAULTLIB:shlwapi.lib"],
-        "//conditions:default": ["-pthread"],
-    }),
-    strip_include_prefix = "include",
-    visibility = ["//visibility:public"],
-)
-
-cc_library(
-    name = "benchmark_release",
-    srcs = [":benchmark_srcs"],
     hdrs = ["include/benchmark/benchmark.h"],
-    defines = ["NDEBUG"],
     linkopts = select({
         ":windows": ["-DEFAULTLIB:shlwapi.lib"],
         "//conditions:default": ["-pthread"],