Remove superfluous paragraph macro.

lib/libusb/libusb20.3

@@ -235,7 +235,6 @@ applications should consider using
 .
 .Sh USB TRANSFER OPERATIONS
 .
-.Pp
 .
 .Fn libusb20_tr_close
 will release all kernel resources associated with an USB
@@ -534,7 +533,6 @@ with an USB transfer.
 .
 .Sh USB DEVICE OPERATIONS
 .
-.Pp
 .
 .Fn libusb20_dev_get_backend_name
 returns a zero terminated string describing the backend used.
@@ -1000,7 +998,6 @@ The buffer pointer cannot be NULL.
 .
 .
 .Sh USB DEBUGGING
-.Pp
 .Ft const char *
 .Fn libusb20_strerror "int code"
 Get the ASCII representation of the error given by the

usr.bin/rctl/rctl.8

@@ -142,7 +142,6 @@ A filter that matches all defined rules for maxproc resource would be
 .It shmsize Ta "SysV shared memory size, in bytes"
 .It wallclock Ta "wallclock time, in seconds"
 .El
-.Pp
 .Sh ACTIONS
 .Bl -column -offset 3n "pseudoterminals"
 .It deny Ta "deny the allocation; not supported for cpu and wallclock"
@@ -161,7 +160,6 @@ Attempt to add rule with action not supported by a given resouce will result
 in error.
 .Pp
 Note that limiting RSS may kill the machine due to thrashing.
-.Pp
 .Sh EXIT STATUS
 .Ex -std
 .Sh EXAMPLES