[libfuzzer] remove icu fuzzers (moved to //third_party/icu/fuzzers).

testing/libfuzzer/fuzzers/BUILD.gn

Index: testing/libfuzzer/fuzzers/BUILD.gn
diff --git a/testing/libfuzzer/fuzzers/BUILD.gn b/testing/libfuzzer/fuzzers/BUILD.gn
index b56159c8402bb4c4b885bc29f5ba3a1e8939cfaf..5304e4f52d5bcbd447d868c4f66ef869e83cec31 100644
--- a/testing/libfuzzer/fuzzers/BUILD.gn
+++ b/testing/libfuzzer/fuzzers/BUILD.gn
@@ -183,15 +183,6 @@ fuzzer_test("libxml_xml_read_memory_fuzzer") {
   dict = "dicts/xml.dict"
 }
 
-fuzzer_test("unicode_string_codepage_create_fuzzer") {
-  sources = [
-    "unicode_string_codepage_create_fuzzer.cc",
-  ]
-  deps = [
-    "//third_party/icu",
-  ]
-}
-
 fuzzer_test("libpng_read_fuzzer") {
   sources = [
     "libpng_read_fuzzer.cc",
@@ -203,17 +194,6 @@ fuzzer_test("libpng_read_fuzzer") {
   dict = "dicts/png.dict"
 }
 
-fuzzer_test("icu_uregex_open_fuzzer") {
-  sources = [
-    "icu_uregex_open_fuzzer.cc",
-  ]
-  deps = [
-    "//third_party/icu",
-  ]
-  dict = "dicts/icu_regex.dict"
-  libfuzzer_options = [ "max_len=128" ]
-}
-
 fuzzer_test("v8_script_parser_fuzzer") {
   sources = []
   deps = [