Chore: Remove visitor, agent and customTemplate meteor templates (#26700)

...app/livechat/client/views/app/customTemplates/register.js

...eteor/app/livechat/client/views/app/tabbar/agentEdit.html

.../meteor/app/livechat/client/views/app/tabbar/agentEdit.js

...eteor/app/livechat/client/views/app/tabbar/agentInfo.html

.../meteor/app/livechat/client/views/app/tabbar/agentInfo.js

...eor/app/livechat/client/views/app/tabbar/visitorEdit.html

...eteor/app/livechat/client/views/app/tabbar/visitorEdit.js

...echat/client/views/app/tabbar/visitorEditCustomField.html

...ivechat/client/views/app/tabbar/visitorEditCustomField.js

.../app/livechat/client/views/app/tabbar/visitorForward.html

...or/app/livechat/client/views/app/tabbar/visitorForward.js

...eor/app/livechat/client/views/app/tabbar/visitorInfo.html

...eteor/app/livechat/client/views/app/tabbar/visitorInfo.js

...p/livechat/client/views/app/tabbar/visitorNavigation.html

...app/livechat/client/views/app/tabbar/visitorNavigation.js

...p/livechat/client/views/app/tabbar/visitorTranscript.html

...app/livechat/client/views/app/tabbar/visitorTranscript.js

apps/meteor/app/livechat/client/views/regular.js

apps/meteor/ee/app/livechat-enterprise/client/index.js

...iews/app/customTemplates/visitorEditCustomFieldsForm.html