Change the default PR value from 0 to default (#1836)

This means that get requests will use bucket-type level Primary Read settings

Co-authored-by: Peter Tihanyi <peter.tihanyi@otpbank.hu>

src/riak_kv_get_fsm.erl

@@ -90,9 +90,8 @@
 
 -define(DEFAULT_TIMEOUT, 60000).
 -define(DEFAULT_R, default).
--define(DEFAULT_PR, 0).
+-define(DEFAULT_PR, default).
 -define(DEFAULT_RT, head).
--define(DEFAULT_NC, 0).
 -define(QUEUE_EMPTY_LOOPS, 8).
 
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