feat: 删除http任务组件图标，改成服务任务的任务类型下拉框中选择

src/components/bpmnProcessDesigner/package/designer/plugins/palette/CustomPalette.js

@@ -89,25 +89,6 @@ F.prototype.getPaletteEntries = function () {
     create.start(event, elementFactory.createParticipantShape())
   }
 
-  function createHttpServiceTask(event) {
-    const httpTask = elementFactory.createShape({
-      type: 'bpmn:ServiceTask'
-    })
-
-    const businessObject = httpTask.businessObject
-
-    if (typeof businessObject.set === 'function') {
-      businessObject.set('flowable:type', 'http')
-    } else {
-      businessObject['flowable:type'] = 'http'
-    }
-
-    if (!businessObject.name) {
-      businessObject.name = translate('HTTP Task')
-    }
-
-    create.start(event, httpTask)
-  }
 
   assign(actions, {
     'hand-tool': {
@@ -197,15 +178,6 @@ F.prototype.getPaletteEntries = function () {
       'bpmn-icon-service',
       translate('Create Service Task')
     ),
-    'create.http-service-task': {
-      group: 'activity',
-      className: 'bpmn-icon-service',
-      title: translate('Create HTTP Task'),
-      action: {
-        dragstart: createHttpServiceTask,
-        click: createHttpServiceTask
-      }
-    },
     'create.data-object': createAction(
       'bpmn:DataObjectReference',
       'data-object',

src/components/bpmnProcessDesigner/package/designer/plugins/palette/paletteProvider.js

@@ -96,25 +96,6 @@ PaletteProvider.prototype.getPaletteEntries = function () {
     create.start(event, elementFactory.createParticipantShape())
   }
 
-  function createHttpServiceTask(event) {
-    const httpTask = elementFactory.createShape({
-      type: 'bpmn:ServiceTask'
-    })
-
-    const businessObject = httpTask.businessObject
-
-    if (typeof businessObject.set === 'function') {
-      businessObject.set('flowable:type', 'http')
-    } else {
-      businessObject['flowable:type'] = 'http'
-    }
-
-    if (!businessObject.name) {
-      businessObject.name = translate('HTTP Task')
-    }
-
-    create.start(event, httpTask)
-  }
 
   assign(actions, {
     'hand-tool': {
@@ -197,15 +178,6 @@ PaletteProvider.prototype.getPaletteEntries = function () {
       'bpmn-icon-service',
       translate('Create Service Task')
     ),
-    'create.http-service-task': {
-      group: 'activity',
-      className: 'bpmn-icon-service',
-      title: translate('Create HTTP Task'),
-      action: {
-        dragstart: createHttpServiceTask,
-        click: createHttpServiceTask
-      }
-    },
     'create.data-object': createAction(
       'bpmn:DataObjectReference',
       'data-object',