fix: remove unused declarations

Author: andreiltd

.clang-tidy

@@ -5,6 +5,10 @@ Checks: >
   modernize-*,
   performance-*,
   readability-*,
+  misc-redundant-expression,
+  misc-uniqueptr-reset-release,
+  misc-unused-alias-decls,
+  misc-unused-using-decls,
   -clang-analyzer-optin.core.EnumCastOutOfRange,
   -cppcoreguidelines-avoid-do-while,
   -cppcoreguidelines-avoid-c-arrays,

builtins/web/blob.cpp

@@ -127,7 +127,6 @@ std::string convert_line_endings_to_native(std::string_view s) {
 namespace builtins::web::blob {
 
 using js::Vector;
-using file::File;
 using streams::BufReader;
 using streams::NativeStreamSource;
 

builtins/web/form-data/form-data-parser.cpp

@@ -53,7 +53,6 @@ namespace builtins::web::form_data {
 
 using file::File;
 using form_data::FormData;
-using form_data::FormDataEntry;
 using jsmultipart::RetCode;
 
 class MultipartParser : public FormDataParser {

builtins/web/form-data/form-data.cpp

@@ -13,7 +13,6 @@
 
 namespace {
 
-using builtins::web::form_data::FormData;
 using builtins::web::form_data::FormDataEntry;
 
 } // namespace

runtime/encode.cpp

@@ -8,7 +8,6 @@
 
 namespace core {
 
-using host_api::HostBytes;
 using host_api::HostString;
 
 HostString encode(JSContext *cx, JS::HandleString str) {

runtime/engine.cpp

@@ -58,9 +58,7 @@ static bool dump_mem_stats(JSContext *cx) {
 }
 
 
-using std::chrono::duration_cast;
 using std::chrono::microseconds;
-using std::chrono::system_clock;
 
 using JS::Value;