session-manager: Unexport the interface

Signed-off-by: Guido Günther <guido.gunther@puri.sm>
10 jobs for resource-cleanups in 37 minutes and 49 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Build
passed #346547
librem5
build:cross-debian-bullseye:i386

00:11:00

passed #346548
librem5
build:native-alpinelinux-edge

00:08:34

passed #346546
librem5
build:native-debian-bullseye

00:11:12

 
  Test+Docs
passed #346550
librem5
build-gtkdoc

00:05:16

passed #346552
librem5
check-license-headers

00:02:30

passed #346551
librem5
check-po

00:00:25

passed #346554
librem5
test:smoke:two-outputs

00:01:59

passed #346553
librem5
unit-test:native-alpinelinux-edge

00:00:50

passed #346549
librem5
unit-test:native-debian-bullseye

00:07:58

36.9%
 
  Package
passed #346555
librem5:arm64
package:deb-debian-bullseye:arm64

00:18:38