Remove local declare var and using declaration file

ng2-components/ng2-activiti-analytics/src/components/raphael/raphael-flow-arrow.component.ts

@@ -19,9 +19,6 @@ import { Directive, OnInit, ElementRef, Input, Output, EventEmitter } from '@ang
 import { RaphaelBase } from './raphael-base';
 import { RaphaelService } from './raphael.service';
 
-declare let Raphael: any;
-declare let Polyline: any;
-
 @Directive({selector: 'raphael-flow-arrow'})
 export class RaphaelFlowArrowDirective extends RaphaelBase implements OnInit {
     @Input()

ng2-components/ng2-activiti-analytics/src/components/raphael/raphael.service.ts

@@ -17,8 +17,6 @@
 
 import { Injectable } from '@angular/core';
 
-declare let Raphael: any;
-
 @Injectable()
 export class RaphaelService {
 

ng2-components/ng2-activiti-analytics/src/components/widgets/checkbox/checkbox.widget.ts

@@ -18,8 +18,6 @@
 import { Component } from '@angular/core';
 import { WidgetComponent } from './../widget.component';
 
-declare var componentHandler;
-
 @Component({
     moduleId: module.id,
     selector: 'checkbox-widget',

ng2-components/ng2-activiti-analytics/src/components/widgets/date-range/date-range.widget.ts

@@ -20,8 +20,6 @@ import { AbstractControl, FormGroup, FormBuilder, FormControl, Validators } from
 import { WidgetComponent } from './../widget.component';
 import * as moment from 'moment';
 
-declare let mdDateTimePicker: any;
-
 function dateCheck(c: AbstractControl) {
     let startDate = moment(c.get('startDate').value);
     let endDate = moment(c.get('endDate').value);

ng2-components/ng2-activiti-analytics/src/components/widgets/widget.component.ts

@@ -17,8 +17,6 @@
 
 import { Input, AfterViewInit, Output, EventEmitter, SimpleChanges, OnChanges } from '@angular/core';
 
-declare var componentHandler;
-
 /**
  * Base widget component.
  */