remove more dead code

src/components/settings/ReverseProxy.vue

@@ -15,10 +15,6 @@
                 <span v-else-if="!running" class="text-danger">{{ $t("Not running") }}</span>
             </div>
 
-            <div v-if="false">
-                {{ message }}
-            </div>
-
             <div v-if="errorMessage" class="mt-3">
                 {{ $t("Message:") }}
                 <textarea v-model="errorMessage" class="form-control" readonly></textarea>

src/pages/EditMonitor.vue

@@ -1277,14 +1277,6 @@
                                     <label for="body" class="form-label">{{ $t("Body") }}</label>
                                     <textarea id="body" v-model="monitor.grpcBody" class="form-control" :placeholder="bodyPlaceholder"></textarea>
                                 </div>
-
-                                <!-- Metadata: temporary disable waiting for next PR allow to send gRPC with metadata -->
-                                <template v-if="false">
-                                    <div class="my-3">
-                                        <label for="metadata" class="form-label">{{ $t("Metadata") }}</label>
-                                        <textarea id="metadata" v-model="monitor.grpcMetadata" class="form-control" :placeholder="headersPlaceholder"></textarea>
-                                    </div>
-                                </template>
                             </template>
                         </div>
                     </div>

src/pages/ManageMaintenance.vue

@@ -28,7 +28,6 @@
                         ></div>
                         <div class="info">
                             <div class="title">{{ item.title }}</div>
-                            <div v-if="false">{{ item.description }}</div>
                             <div class="status">
                                 {{ $t("maintenanceStatus-" + item.status) }}
                             </div>

src/pages/StatusPage.vue

@@ -74,11 +74,6 @@
                     <label class="form-check-label" for="show-only-last-heartbeat">{{ $t("showOnlyLastHeartbeat") }}</label>
                 </div>
 
-                <div v-if="false" class="my-3">
-                    <label for="password" class="form-label">{{ $t("Password") }} <sup>{{ $t("Coming Soon") }}</sup></label>
-                    <input id="password" v-model="config.password" disabled type="password" autocomplete="new-password" class="form-control">
-                </div>
-
                 <!-- Domain Name List -->
                 <div class="my-3">
                     <label class="form-label">