Move basic utility functions from ethUtils to main utils file

src_features/signMessageEIP712/commands_712.c

@@ -13,7 +13,6 @@
 #include "schema_hash.h"
 #include "filtering.h"
 #include "common_712.h"
-#include "ethUtils.h"   // allzeroes
 #include "common_ui.h"  // ui_idle
 
 /**

src_features/signMessageEIP712/field_hash.c

@@ -8,7 +8,6 @@
 #include "mem_utils.h"
 #include "shared_context.h"
 #include "ui_logic.h"
-#include "ethUtils.h"        // KECCAK256_HASH_BYTESIZE
 #include "context_712.h"     // contract_addr
 #include "utils.h"           // u64_from_BE
 #include "apdu_constants.h"  // APDU response codes

src_features/signMessageEIP712/path.c

@@ -8,7 +8,6 @@
 #include "commands_712.h"
 #include "type_hash.h"
 #include "shared_context.h"
-#include "ethUtils.h"
 #include "mem_utils.h"
 #include "ui_logic.h"
 #include "apdu_constants.h"  // APDU response codes

src_features/signMessageEIP712/type_hash.c

@@ -7,7 +7,6 @@
 #include "mem_utils.h"
 #include "type_hash.h"
 #include "shared_context.h"
-#include "ethUtils.h"  // KECCAK256_HASH_BYTESIZE
 #include "format_hash_field_type.h"
 #include "hash_bytes.h"
 #include "apdu_constants.h"  // APDU response codes

src_features/signMessageEIP712/ui_logic.c

@@ -7,8 +7,7 @@
 #include "mem_utils.h"
 #include "os_io.h"
 #include "shared_context.h"
-#include "ethUtils.h"  // getEthDisplayableAddress
-#include "utils.h"     // uint256_to_decimal
+#include "utils.h"  // uint256_to_decimal
 #include "common_712.h"
 #include "context_712.h"     // eip712_context_deinit
 #include "uint256.h"         // tostring256 && tostring256_signed