circle-ci: Removed 3.1.5 tests (out of support) and disabled server adapter tests.
circle-ci: Removed 3.1.5 tests (out of support) and disabled server adapter tests.

Inndy/bottle,oz123/bottle,Inndy/bottle,bottlepy/bottle,fkazimierczak/bottle,fkazimierczak/bottle,defnull/bottle,defnull/bottle,ifduyue/bottle,bottlepy/bottle,ifduyue/bottle,oz123/bottle