Update posix-arrays.sh

Author: friendly-bits

posix-arrays.sh

@@ -9,7 +9,6 @@
 
 # keys/indices are stored in a variable named in the format '_[x]_[arr_name]_keys' or '_[x]_[arr_name]_indices'
 # array 'sorted' flag (1=true, 0=false) is stored in variable: $_[x]_[arr_name]_sorted_flag
-# when the 'sorted' flag variable value is an empty string, this indicates an empty/non-existing array
 # for indexed arrays, $_i_[arr_name]_h_index variable holds the highest index in the array if it's known