[csrng/doc] fix lc_hw_debug_en comment

The statement in the hjson file is not true anymore, removed.

Signed-off-by: Mark Branstad <mark.branstad@wdc.com>
diff --git a/hw/ip/csrng/data/csrng.hjson b/hw/ip/csrng/data/csrng.hjson
index e8f8410..beab99e 100644
--- a/hw/ip/csrng/data/csrng.hjson
+++ b/hw/ip/csrng/data/csrng.hjson
@@ -278,8 +278,6 @@
                 pointer (selects 32 bits of the 448 bit field) will reset to zero. The !!INT_STATE_NUM
                 can be re-written at this time (internal read pointer is also reset), and then
                 another internal state field can be read.
-                Also, the life cycle state must be one where the signal "lc_hw_debug_en" is asserted
-                in order to read any internal state field.
                 '''
         }
       ]