refactor: get rid of flex-layout dependency

src/app/shared/shared.module.ts

@@ -1,7 +1,6 @@
 import { DragDropModule } from '@angular/cdk/drag-drop';
 import { CommonModule } from '@angular/common';
 import { NgModule } from '@angular/core';
-import { FlexLayoutModule } from '@angular/flex-layout';
 import { FormsModule, ReactiveFormsModule } from '@angular/forms';
 import { TranslateModule } from '@ngx-translate/core';
 import { NgxWhatsNewModule } from 'ngx-whats-new';
@@ -25,7 +24,6 @@ import { MomentDatePipe } from './pipes/moment-date.pipe';
     ],
     imports: [
         CommonModule,
-        FlexLayoutModule,
         FormsModule,
         MaterialModule,
         NgxWhatsNewModule,
@@ -36,7 +34,6 @@ import { MomentDatePipe } from './pipes/moment-date.pipe';
     exports: [
         ConfirmDialogComponent,
         FilterPipe,
-        FlexLayoutModule,
         FormsModule,
         HeaderComponent,
         MaterialModule,