Remove unnecessary dep to non-existent package

There is no libgio2.0-dev, but libgio-2.0.so is in libglib2.0-dev
2 jobs for librem5 in 2 minutes (queued for 3 seconds)
Status Job ID Name Coverage
  Build
passed #144328
librem5
build-debian-gcc

00:01:04

 
  Package
failed #144329
librem5
build-debian-package

00:00:55

 
Name Stage Failure
failed
build-debian-package Package
/usr/bin/ld: /tmp/ccwI7VRV.o: relocation R_X86_64_PC32 against symbol `HFUJabberStreamDataTable' can not be used when making a shared object; recompile with -fPIC
/usr/bin/ld: final link failed: nonrepresentable section on output
collect2: error: ld returned 1 exit status
make[1]: *** [makefile:35: jabber_http_file_upload.so] Error 1
make[1]: Leaving directory '/builds/bwildenhain/purple-xmpp-http-upload'
dh_auto_build: make -j4 "INSTALL=install --strip-program=true" returned exit code 2
make: *** [debian/rules:7: build] Error 2
dpkg-buildpackage: error: debian/rules build subprocess returned exit status 2
ERROR: Job failed: exit code 1