Revert "support compile with SDK 2.1.0 and SDK 2.1.1 (#257)"

This reverts commit 7c55234.

Author: will-v-pi

main.cpp

@@ -84,18 +84,6 @@ static __forceinline int __builtin_ctz(unsigned x) {
 #define OTP_ROW_COUNT (OTP_PAGE_COUNT * OTP_PAGE_ROWS)
 #define OTP_SPECIAL_PAGES 3
 
-// Support for SDK 2.1.0 & SDK 2.1.1 -----
-#ifndef CYW43_FIRMWARE_FAMILY_ID
-#define CYW43_FIRMWARE_FAMILY_ID    0xe48bff55u
-#endif
-#ifndef BOOTROM_FAMILY_ID_MIN
-#define BOOTROM_FAMILY_ID_MIN       RP2040_FAMILY_ID
-#endif
-#ifndef BOOTROM_FAMILY_ID_MAX
-#define BOOTROM_FAMILY_ID_MAX       RP2350_ARM_NS_FAMILY_ID
-#endif
-// ------
-
 using std::string;
 using std::vector;
 using std::pair;