tc: Change build process not to use spec file

tc: Change build process not to use spec file

Change the build process as follows:

 - Removes tpl-test.spec which was used for building tpl-test which could leads
   buggy behaviour in binary build process.

 - Instead, all build processes are done with libtpl-egl.spec and tc/Makefile.

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(Changed) tpl-test build instruction
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 - Build libtpl-egl:
     $ gbs build -A armv7l

 - Build libtpl-egl with tpl-test:
     Change the value of 'ENABLE_TPL_TEST' from 0 to 1 in libtpl-egl.spec.
     Then, build with [--include-all] flag like below.

     $ gbs build -A armv7l --include-all

Change-Id: I987556c04192009b2143ebcad513a460f13e9ad0
Signed-off-by: Hoyub Lee <hoyub.lee@samsung.com>