remove code in before startblock component

frontend/src/components/DecayInformations/DecayInformation-BeforeStartblock.vue

@@ -1,5 +1,9 @@
 <template>
   <div class="decayinformation-startblock">
+    <div class="my-4">
+      <div class="font-weight-bold pb-2">{{ $t('form.memo') }}</div>
+      <div>{{ memo }}</div>
+    </div>
     <div class="mt-3 mb-3 text-center">
       <b>{{ $t('decay.before_startblock_transaction') }}</b>
     </div>
@@ -8,5 +12,11 @@
 <script>
 export default {
   name: 'DecayInformation-StartBlock',
+  props: {
+    memo: {
+      type: String,
+      required: true,
+    },
+  },
 }
 </script>

frontend/src/components/DecayInformations/DecayInformation.vue

@@ -1,7 +1,6 @@
 <template>
   <div class="decay-information-box">
-    <div v-if="decay.start === null && memo" class="mb-4">{{ memo }}</div>
-    <decay-information-before-startblock v-if="decay.start === null" />
+    <decay-information-before-startblock v-if="decay.start === null" :memo="memo" />
     <decay-information-decay-startblock
       v-else-if="isStartBlock"
       :amount="amount"