pkg/httpx/form: Remove unuused fields

pkg/pools/bpool.go

@@ -0,0 +1,19 @@
+package pools
+
+import (
+	"strings"
+	"sync"
+)
+
+var builders = sync.Pool{
+	New: func() any { return new(strings.Builder) },
+}
+
+func GetBuilder() *strings.Builder {
+	return builders.Get().(*strings.Builder)
+}
+
+func ReleaseBuilder(builder *strings.Builder) {
+	builder.Reset()
+	builders.Put(builder)
+}