Filters/Geometry: Remove some unused functions from tests

Change-Id: Ic1ae3928ee171531136d42630fec6484eb0a9cbd
Filters/Geometry: Hide WriteGrid if ENABLE_IO isn't on

It is unused otherwise.

Change-Id: Ic13a1e15ae2dd121b0122e7b520551184da57e2c
Merge topic 'update_vtk_sha1' into pv-master

118242d9 Merge topic 'tiff-zeiss' into master
c28d5026 Merge topic 'ExposeSlabSum' into master
048419fb Add SetSlabModeToSum() to vtkImageResliceMapper.
8dc4fbe9 Merge topic 'CleanHyperTreeGrid' into master
07512db9 Merge topic 'nifti' into master
e7aa61da Add reader/writer for NIFTIv1 and NIFTIv2 files.
c13f410a Merge topic 'RestoreInteractionWidgetTests' into master
1098bc2e Merge topic 'fix-locator-recreation' into master
7ff8bfd0 Two fixes for certain lsm (zeiss) tiff images.
33916af1 Merge topic 'tiled-tiff-extent' into master
0fe573e8 Fix the extent for tiled tiff files.
eb1a585d ENH: Provide PlaybackFile for recorded interaction events
f82238ed PERF: Parallel streamline was slow. Fixed.
f183298c Merge topic 'python-ptr-erase' into master
666ec458 Merge topic 'vtkweb_ssl' into master
d47d6677 Merge topic 'catalyst-web-better-workflow' into master
...
Merge remote-tracking branch 'pvvtk/pv-master' into HEAD

* pvvtk/pv-master:

Change-Id: Ie60bd383aa22b225de246e543369e876095a23c6
Merge topic 'remove-unused-functions' into master

964d6c80 Filters/Geometry: Hide WriteGrid if ENABLE_IO isn't on
2b67930d Filters/Geometry: Remove some unused functions from tests
NIFTI makes IOImage module depend on vtkzlib.

This dependency has to be stated explicitly.  This error wasn't caught
immediately because, on most sytems, vtkzlib is linked transitively via
vtktiff and vtkpng.

Change-Id: I36408557a7eed266fe05cdc891fc75dc1259502e
Add support for mobile device interaction

Change-Id: I6280c8faf0b57081a156e7e2f90ebd8a9df49c66
Merge topic 'nifti-zlib-depends' into master

1f777440 NIFTI makes IOImage module depend on vtkzlib.
Merge topic 'catalyst-web-handle-mobile' into master

53d52a87 Add support for mobile device interaction