Since you have made the modifications also under the tomcat folder then no need to redeploy.
If you wanna know how to redeploy :
1 - Open CMD.
2 - Type command :
cd C:\Program Files (x86)\SAP BusinessObjects\SAP BusinessObjects Enterprise XI 4.0\wdeploy
3 - Type command : wdeploy tomcat7 deployall
4 - Restart Tomcat after redeploying is finished.
Regards.
Bayrem