src: remove unused using declarations

This commit removes the unused using declarations reported by lint-cpp.

PR-URL: #33268
Refs: #29226
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Christian Clauss <cclauss@me.com>
Reviewed-By: Daniel Bevenius <daniel.bevenius@gmail.com>
Reviewed-By: Beth Griggs <Bethany.Griggs@uk.ibm.com>

Author: danbev

src/heap_utils.cc

@@ -15,7 +15,6 @@ using v8::Global;
 using v8::HandleScope;
 using v8::HeapSnapshot;
 using v8::Isolate;
-using v8::JSON;
 using v8::Local;
 using v8::MaybeLocal;
 using v8::Number;

src/inspector_agent.cc

@@ -45,11 +45,9 @@ using v8::Isolate;
 using v8::Local;
 using v8::Message;
 using v8::Object;
-using v8::String;
 using v8::Task;
 using v8::TaskRunner;
 using v8::Value;
-
 using v8_inspector::StringBuffer;
 using v8_inspector::StringView;
 using v8_inspector::V8Inspector;

src/inspector_js_api.cc

@@ -12,7 +12,6 @@ namespace node {
 namespace inspector {
 namespace {
 
-using v8::Boolean;
 using v8::Context;
 using v8::Function;
 using v8::FunctionCallbackInfo;

src/module_wrap.cc

@@ -34,9 +34,7 @@ using v8::HandleScope;
 using v8::Integer;
 using v8::IntegrityLevel;
 using v8::Isolate;
-using v8::Just;
 using v8::Local;
-using v8::Maybe;
 using v8::MaybeLocal;
 using v8::Module;
 using v8::Number;

src/node_credentials.cc

@@ -15,7 +15,6 @@ namespace node {
 
 using v8::Array;
 using v8::Context;
-using v8::Function;
 using v8::FunctionCallbackInfo;
 using v8::HandleScope;
 using v8::Isolate;

src/node_dir.cc

@@ -28,7 +28,6 @@ using fs::GetReqWrap;
 
 using v8::Array;
 using v8::Context;
-using v8::Function;
 using v8::FunctionCallbackInfo;
 using v8::FunctionTemplate;
 using v8::HandleScope;

src/node_dtrace.cc

@@ -57,7 +57,6 @@ using v8::HandleScope;
 using v8::Isolate;
 using v8::Local;
 using v8::Object;
-using v8::String;
 using v8::Value;
 
 #define SLURP_STRING(obj, member, valp)                                    \

src/node_errors.cc

@@ -25,7 +25,6 @@ using v8::Local;
 using v8::Maybe;
 using v8::MaybeLocal;
 using v8::Message;
-using v8::Number;
 using v8::Object;
 using v8::ScriptOrigin;
 using v8::StackFrame;

src/node_http2.cc

@@ -18,15 +18,13 @@ using v8::ArrayBuffer;
 using v8::ArrayBufferView;
 using v8::Boolean;
 using v8::Context;
-using v8::Float64Array;
 using v8::Function;
 using v8::Integer;
 using v8::NewStringType;
 using v8::Number;
 using v8::ObjectTemplate;
 using v8::String;
 using v8::Uint32;
-using v8::Uint32Array;
 using v8::Uint8Array;
 using v8::Undefined;
 

src/node_main_instance.cc

@@ -20,7 +20,6 @@ using v8::HandleScope;
 using v8::Isolate;
 using v8::Local;
 using v8::Locker;
-using v8::Object;
 using v8::SealHandleScope;
 
 NodeMainInstance::NodeMainInstance(Isolate* isolate,