Remove unneeded rc_cur_time key from RCCacheEntryFactoryTest

Was added with I873f6b86007000a94337f0c963df4bf8fec5b715,
but patch set was older than the remove from sql
in I4a9c2fa813d1f25dfb755e564f7677a212934d7b.

Change-Id: I6e938c3d0b67470225f53cc5229f7669a7cd8f0b
Merge "Remove unneeded rc_cur_time key from RCCacheEntryFactoryTest"