Remove THROW from lib mode handlers and remove associated TRY CATCH context

src/handle_get_printable_amount.c

@@ -7,13 +7,14 @@
 #include <stdint.h>
 #include <os.h>
 
-int handle_get_printable_amount(get_printable_amount_parameters_t* params, chain_config_t* config) {
+void handle_get_printable_amount(get_printable_amount_parameters_t* params,
+                                 chain_config_t* config) {
     uint8_t decimals;
     char ticker[MAX_TICKER_LEN];
     memset(params->printable_amount, 0, sizeof(params->printable_amount));
     if (params->amount_length > 32) {
         PRINTF("Amount is too big, 32 bytes max but buffer has %u bytes", params->amount_length);
-        return 0;
+        return;
     }
 
     // If the amount is a fee, its value is nominated in ETH even if we're doing an ERC20 swap
@@ -29,7 +30,7 @@ int handle_get_printable_amount(get_printable_amount_parameters_t* params, chain
                                ticker,
                                &decimals)) {
             PRINTF("Error while parsing config\n");
-            return 0;
+            return;
         }
     }
 
@@ -39,7 +40,7 @@ int handle_get_printable_amount(get_printable_amount_parameters_t* params, chain
                         ticker,
                         params->printable_amount,
                         sizeof(params->printable_amount))) {
-        THROW(EXCEPTION_OVERFLOW);
+        memset(params->printable_amount, 0, sizeof(params->printable_amount));
     }
-    return 1;
+    return;
 }