LibDebug: Remove i686 support

Author: https://github.com/supercomputer7
Commit: 1d26b46884
Pull-request: https://github.com/SerenityOS/serenity/pull/15467
Issue: https://github.com/SerenityOS/serenity/issues/15444
Reviewed-by: https://github.com/ADKaster
Reviewed-by: https://github.com/Hendiadyoin1
Reviewed-by: https://github.com/fuel-pcbox

Userland/Libraries/LibDebug/Dwarf/Expression.cpp

@@ -21,19 +21,6 @@ Value evaluate(ReadonlyBytes bytes, [[maybe_unused]] PtraceRegisters const& regs
         stream >> opcode;
 
         switch (static_cast<Operations>(opcode)) {
-#if ARCH(I386)
-        case Operations::RegEbp: {
-            ssize_t offset = 0;
-            stream.read_LEB128_signed(offset);
-            return Value { Type::UnsignedInteger, { regs.ebp + offset } };
-        }
-
-        case Operations::FbReg: {
-            ssize_t offset = 0;
-            stream.read_LEB128_signed(offset);
-            return Value { Type::UnsignedInteger, { regs.ebp + 2 * sizeof(size_t) + offset } };
-        }
-#endif
 
         default:
             dbgln("DWARF expr addr: {:p}", bytes.data());