[gn] Remove the wasm_test_signatures source set.

The source set only contained a header file, which caused problems
when compiling a static library with VS.

R=machenbach@chromium.org
BUG=v8:6158

Change-Id: I3eed4a888e72cf6a2917190e4a1db7b38006cd0c
Reviewed-on: https://chromium-review.googlesource.com/463027Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44263}

BUILD.gn

@@ -2980,17 +2980,6 @@ v8_source_set("wasm_module_runner") {
   ]
 }
 
-v8_source_set("wasm_test_signatures") {
-  sources = [
-    "test/common/wasm/test-signatures.h",
-  ]
-
-  configs = [
-    ":external_config",
-    ":internal_config_base",
-  ]
-}
-
 v8_source_set("wasm_fuzzer") {
   sources = [
     "test/fuzzer/wasm.cc",
@@ -3031,13 +3020,13 @@ v8_fuzzer("wasm_asmjs_fuzzer") {
 
 v8_source_set("wasm_code_fuzzer") {
   sources = [
+    "test/common/wasm/test-signatures.h",
     "test/fuzzer/wasm-code.cc",
   ]
 
   deps = [
     ":fuzzer_support",
     ":wasm_module_runner",
-    ":wasm_test_signatures",
   ]
 
   configs = [
@@ -3051,13 +3040,13 @@ v8_fuzzer("wasm_code_fuzzer") {
 
 v8_source_set("wasm_call_fuzzer") {
   sources = [
+    "test/common/wasm/test-signatures.h",
     "test/fuzzer/wasm-call.cc",
   ]
 
   deps = [
     ":fuzzer_support",
     ":wasm_module_runner",
-    ":wasm_test_signatures",
   ]
 
   configs = [
@@ -3223,13 +3212,13 @@ v8_fuzzer("wasm_data_section_fuzzer") {
 
 v8_source_set("wasm_compile_fuzzer") {
   sources = [
+    "test/common/wasm/test-signatures.h",
     "test/fuzzer/wasm-compile.cc",
   ]
 
   deps = [
     ":fuzzer_support",
     ":wasm_module_runner",
-    ":wasm_test_signatures",
   ]
 
   configs = [

test/cctest/BUILD.gn

@@ -11,6 +11,7 @@ v8_executable("cctest") {
     "$target_gen_dir/resources.cc",
 
     ### gcmole(all) ###
+    "../common/wasm/test-signatures.h",
     "asmjs/test-asm-typer.cc",
     "ast-types-fuzz.h",
     "cctest.cc",
@@ -334,7 +335,6 @@ v8_executable("cctest") {
     "../..:v8_libbase",
     "../..:v8_libplatform",
     "../..:wasm_module_runner",
-    "../..:wasm_test_signatures",
     "//build/config/sanitizers:deps",
     "//build/win:default_exe_manifest",
   ]