Remove dead code.

Author: evoskuil

include/bitcoin/system/literals.hpp

@@ -112,18 +112,6 @@ CONSTEVAL Domain negative(integer_type value) noexcept(false)
     return static_cast<Domain>(~narrowed + narrow{1});
 }
 
-template <size_t Size>
-struct string_holder
-{
-    char str[Size];
-
-    CONSTEVAL string_holder(const char(&string)[Size]) noexcept
-    {
-        for (size_t i = 0; i < Size; ++i)
-            str[i] = string[i];
-    }
-};
-
 BC_POP_WARNING()
 BC_POP_WARNING()
 

include/bitcoin/system/types.hpp

@@ -191,7 +191,6 @@ class data_t
     {
     }
 
-    CONSTEVAL bool operator==(const data_t&) const noexcept = default;
     const std::array<uint8_t, Size - 1> data;
 
 private:
@@ -214,7 +213,6 @@ class text_t
     {
     }
 
-    CONSTEVAL bool operator==(const text_t&) const noexcept = default;
     const std::array<char, Size - 1> text;
 
 private: