Remove examples/vehicle-scan/Makefile

Fixes #12

The proper Makefile for vehicle-scan is generated by running CMake.
Remove examples/vehicle-tool/Makefile

Fixes #14

The proper Makefile for vehicle-tool is generated by running CMake.
Merge pull request #13 from fivemicro/fix-issue-12

Remove examples/vehicle-scan/Makefile
Merge pull request #15 from fivemicro/fix-issue-14

Remove examples/vehicle-tool/Makefile