fix(form): clean code

src/app/form/form.component.scss

@@ -17,7 +17,7 @@ h3 {
   z-index: $structure-details-z-index;
   @media #{$tablet} {
     position: fixed; //Hide default header app.
-    height: calc(100vh);
+    height: 100vh;
     top: 0;
   }
 }

src/app/guards/deactivate.guard.ts

-import { ActivatedRouteSnapshot, CanDeactivate, RouterStateSnapshot } from '@angular/router';
+import { CanDeactivate } from '@angular/router';
 import { Injectable } from '@angular/core';
-import { Observable, Subject } from 'rxjs';
+import { Observable } from 'rxjs';
 
 export interface IDeactivateComponent {
   canExit: () => Observable<boolean> | Promise<boolean> | boolean;
@@ -12,16 +12,10 @@ export interface IDeactivateComponent {
 @Injectable()
 export class DeactivateGuard implements CanDeactivate<Object> {
   component: Object;
-  route: ActivatedRouteSnapshot;
 
   constructor() {}
 
-  canDeactivate(
-    component: IDeactivateComponent,
-    route: ActivatedRouteSnapshot,
-    state: RouterStateSnapshot,
-    nextState: RouterStateSnapshot
-  ): Observable<boolean> | Promise<boolean> | boolean {
+  canDeactivate(component: IDeactivateComponent): Observable<boolean> | Promise<boolean> | boolean {
     return component.canExit();
   }
 }