diff --git a/AK/StringBuilder.cpp b/AK/StringBuilder.cpp
index 048ea24dda7..33306fed2e4 100644
--- a/AK/StringBuilder.cpp
+++ b/AK/StringBuilder.cpp
@@ -18,32 +18,6 @@
 
 namespace AK {
 
-inline ErrorOr<void> StringBuilder::will_append(size_t size)
-{
-    if (m_use_inline_capacity_only == UseInlineCapacityOnly::Yes) {
-        VERIFY(m_buffer.capacity() == StringBuilder::inline_capacity);
-        Checked<size_t> current_pointer = m_buffer.size();
-        current_pointer += size;
-        VERIFY(!current_pointer.has_overflow());
-        if (current_pointer <= StringBuilder::inline_capacity) {
-            return {};
-        }
-        return Error::from_errno(ENOMEM);
-    }
-
-    Checked<size_t> needed_capacity = m_buffer.size();
-    needed_capacity += size;
-    VERIFY(!needed_capacity.has_overflow());
-    // Prefer to completely use the existing capacity first
-    if (needed_capacity <= m_buffer.capacity())
-        return {};
-    Checked<size_t> expanded_capacity = needed_capacity;
-    expanded_capacity *= 2;
-    VERIFY(!expanded_capacity.has_overflow());
-    TRY(m_buffer.try_ensure_capacity(expanded_capacity.value()));
-    return {};
-}
-
 ErrorOr<StringBuilder> StringBuilder::create(size_t initial_capacity)
 {
     StringBuilder builder;
@@ -56,9 +30,19 @@ StringBuilder::StringBuilder(size_t initial_capacity)
     m_buffer.ensure_capacity(initial_capacity);
 }
 
-StringBuilder::StringBuilder(UseInlineCapacityOnly use_inline_capacity_only)
-    : m_use_inline_capacity_only(use_inline_capacity_only)
+inline ErrorOr<void> StringBuilder::will_append(size_t size)
 {
+    Checked<size_t> needed_capacity = m_buffer.size();
+    needed_capacity += size;
+    VERIFY(!needed_capacity.has_overflow());
+    // Prefer to completely use the existing capacity first
+    if (needed_capacity <= m_buffer.capacity())
+        return {};
+    Checked<size_t> expanded_capacity = needed_capacity;
+    expanded_capacity *= 2;
+    VERIFY(!expanded_capacity.has_overflow());
+    TRY(m_buffer.try_ensure_capacity(expanded_capacity.value()));
+    return {};
 }
 
 size_t StringBuilder::length() const
diff --git a/AK/StringBuilder.h b/AK/StringBuilder.h
index 59995754c8a..2dfff324249 100644
--- a/AK/StringBuilder.h
+++ b/AK/StringBuilder.h
@@ -23,12 +23,6 @@ public:
     static ErrorOr<StringBuilder> create(size_t initial_capacity = inline_capacity);
 
     explicit StringBuilder(size_t initial_capacity = inline_capacity);
-
-    enum class UseInlineCapacityOnly {
-        Yes,
-        No,
-    };
-    explicit StringBuilder(UseInlineCapacityOnly use_inline_capacity_only);
     ~StringBuilder() = default;
 
     ErrorOr<void> try_append(StringView);
@@ -106,7 +100,6 @@ private:
     u8* data();
     u8 const* data() const;
 
-    UseInlineCapacityOnly m_use_inline_capacity_only { UseInlineCapacityOnly::No };
     Detail::ByteBuffer<inline_capacity> m_buffer;
 };