COMP: Silence discarding return value in GE5ImageIO
COMP: Silence discarding return value in GE5ImageIO

std::remove also returns an iterator.

To address:

  D:\a\1\s\Modules\IO\GE\src\itkGE5ImageIO.cxx(292): warning C4834: discarding return value of function with 'nodiscard' attribute

vfonov/ITK,richardbeare/ITK,hjmjohnson/ITK,Kitware/ITK,InsightSoftwareConsortium/ITK,Kitware/ITK,malaterre/ITK,BRAINSia/ITK,InsightSoftwareConsortium/ITK,BRAINSia/ITK,malaterre/ITK,LucasGandel/ITK,vfonov/ITK,Kitware/ITK,vfonov/ITK,LucasGandel/ITK,vfonov/ITK,thewtex/ITK,malaterre/ITK,LucasGandel/ITK,LucasGandel/ITK,Kitware/ITK,malaterre/ITK,thewtex/ITK,Kitware/ITK,vfonov/ITK,InsightSoftwareConsortium/ITK,malaterre/ITK,hjmjohnson/ITK,richardbeare/ITK,richardbeare/ITK,BRAINSia/ITK,richardbeare/ITK,thewtex/ITK,hjmjohnson/ITK,Kitware/ITK,thewtex/ITK,LucasGandel/ITK,Kitware/ITK,hjmjohnson/ITK,vfonov/ITK,InsightSoftwareConsortium/ITK,BRAINSia/ITK,BRAINSia/ITK,hjmjohnson/ITK,InsightSoftwareConsortium/ITK,malaterre/ITK,malaterre/ITK,thewtex/ITK,LucasGandel/ITK,malaterre/ITK,thewtex/ITK,vfonov/ITK,thewtex/ITK,hjmjohnson/ITK,vfonov/ITK,BRAINSia/ITK,richardbeare/ITK,LucasGandel/ITK,hjmjohnson/ITK,malaterre/ITK,InsightSoftwareConsortium/ITK,InsightSoftwareConsortium/ITK,richardbeare/ITK,vfonov/ITK,richardbeare/ITK,LucasGandel/ITK,BRAINSia/ITK