testing/phpspy: don't vendor termbox

Instead use our termbox package. This allows us to remove the python2
compile-time dependency from this package.

See #11577
7 jobs for !8645 with phpspy-py3 in 1 minute and 22 seconds (queued for 1 second)
latest detached
Status Job ID Name Coverage
  Lint
failed #131112
docker-alpine x86_64 allowed to fail
lint

00:00:22

 
  Build
passed #131117
docker-alpine ci-build aarch64
build-aarch64

00:00:40

passed #131118
docker-alpine ci-build armv7
build-armv7

00:00:43

passed #131116
docker-alpine ci-build ppc64le
build-ppc64le

00:00:57

passed #131115
docker-alpine ci-build s390x
build-s390x

00:00:29

passed #131114
docker-alpine ci-build x86
build-x86

00:00:33

passed #131113
docker-alpine ci-build x86_64
build-x86_64

00:00:30

 
Name Stage Failure
failed
lint Lint
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