Warnings when building android

[vtrifonov]

Environment
Provide version numbers for the following components (information can be retrieved by running tns info in your project folder or by inspecting the package.json of the project):

• Android Runtime: 5.4.0

Describe the bug
When you run tns build android for the first time you get the following warnings:

Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.

To Reproduce

tns create test --ng
cd test
tns build android

Expected behavior
Not to output the warnings