v1-9-sc-1: [AIRFLOW-XXX] Remove unused coveralls token
(cherry picked from commit b7e0d09a9ccc62dada5e29d05b9f668df3fb3942) Signed-off-by: Bolke de Bruin <[email protected]> (cherry picked from commit 579068a8877d7be90c6fcba8ae44691e4ba2b658) Signed-off-by: Bolke de Bruin <[email protected]> (cherry picked from commit 17970c57e9fd377f8a0000e32dd69aa7cb9fa2f2) Signed-off-by: Bolke de Bruin <[email protected]>