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 - 4.1.2
HTC Sense Version - 5.0
Software Number - 1.29.841.2
Baseband Version - 4A.14.3250.13_10.33.1150.01L
Kernel Version - 3.4.10-g42e6c45 root@abm007 SMP PREEMPT
Build Number - 1.29.841.2 CL164689
Australia - Telstra - Windows 7 & XP