Fix included headers in several tests.

PiperOrigin-RevId: 910064673
diff --git a/fuzztest/internal/BUILD b/fuzztest/internal/BUILD
index fe8a940..0912fe0 100644
--- a/fuzztest/internal/BUILD
+++ b/fuzztest/internal/BUILD
@@ -272,7 +272,6 @@
         "@com_google_fuzztest//common:defs",
         "@com_google_fuzztest//common:logging",
         "@com_google_fuzztest//common:temp_dir",
-        "@com_google_fuzztest//fuzztest:fuzztest_core",
         "@googletest//:gtest_main",
     ],
 )
diff --git a/fuzztest/internal/CMakeLists.txt b/fuzztest/internal/CMakeLists.txt
index d229aaf..edc4803 100644
--- a/fuzztest/internal/CMakeLists.txt
+++ b/fuzztest/internal/CMakeLists.txt
@@ -224,7 +224,7 @@
     "io_test.cc"
   DEPS
     fuzztest::io
-    absl::check
+    GTest::gmock_main
     absl::status
     absl::strings
     absl::time
@@ -232,8 +232,6 @@
     fuzztest::defs
     fuzztest::common_logging
     fuzztest::temp_dir
-    fuzztest::fuzztest_core
-    GTest::gmock_main
 )
 
 fuzztest_cc_library(
@@ -552,11 +550,11 @@
 
 if (FUZZTEST_BUILD_FLATBUFFERS)
   fuzztest_flatbuffers_generate_headers(
-    TARGET 
+    TARGET
       test_flatbuffers_headers
     SCHEMAS
       "test_flatbuffers.fbs"
-    FLAGS 
+    FLAGS
       --bfbs-gen-embed --gen-name-strings
     TESTONLY
   )
diff --git a/fuzztest/internal/io_test.cc b/fuzztest/internal/io_test.cc
index 7e6f51c..7ea578e 100644
--- a/fuzztest/internal/io_test.cc
+++ b/fuzztest/internal/io_test.cc
@@ -33,13 +33,13 @@
 #include "gtest/gtest.h"
 #include "absl/status/status.h"
 #include "absl/strings/str_cat.h"
+#include "absl/strings/string_view.h"
 #include "absl/time/clock.h"
 #include "absl/time/time.h"
 #include "./common/blob_file.h"
 #include "./common/defs.h"
 #include "./common/logging.h"
 #include "./common/temp_dir.h"
-#include "./fuzztest/fuzztest_core.h"
 
 namespace fuzztest::internal {
 namespace {
diff --git a/fuzztest/internal/seed_seq_test.cc b/fuzztest/internal/seed_seq_test.cc
index 5f9ed7a..6cb8770 100644
--- a/fuzztest/internal/seed_seq_test.cc
+++ b/fuzztest/internal/seed_seq_test.cc
@@ -14,14 +14,13 @@
 
 #include "./fuzztest/internal/seed_seq.h"
 
+#include <stdlib.h>
+
 #include <cstdint>
-#include <cstdlib>
 #include <optional>
 #include <random>
 #include <sstream>
 #include <string>
-#include <tuple>
-#include <type_traits>
 #include <vector>
 
 #include "gmock/gmock.h"
diff --git a/fuzztest/internal/type_support_test.cc b/fuzztest/internal/type_support_test.cc
index c8bb7de..8669236 100644
--- a/fuzztest/internal/type_support_test.cc
+++ b/fuzztest/internal/type_support_test.cc
@@ -23,7 +23,6 @@
 #include <list>
 #include <map>
 #include <memory>
-#include <optional>
 #include <set>
 #include <sstream>
 #include <string>