Sure have. I have uninstalled the app, then hit the little 'X' in the "ALL" apps list (under "My apps"). Then cleared cache and data from Play Store app (through phone's settings), then rebooted phone.
Haha, it looks like it simply cannot be done.
Thanks for the reply.
Android Version - 4.4.2
HTC Sense Version - 6.0
Software Number - 5.11.841.9
Baseband Version - 4T.27.3218.14_10.33C.1718.07L
Kernel Version - 3.4.10-g52028d8 root@abm021 #1 SMP PREEMPT
Build Number - 5.11.841.9 CL334166
Australia - Telstra - Windows 7 & XP