Merge branch 'hashmap-test-update' of https://github.com/chuckyvt/stdlib into hashmap-test-update

Author: chuckyvt

example/hashmaps/example_hashmaps_abstract_type.f90

@@ -1,9 +1,7 @@
-
 ! For procedure interfaces, consider using abstract hashmap_type for interface definition. 
 ! This allows the procedure to be used for both chaining and open hashmap types.
 
 program example_abstract_type
-    use stdlib_kinds, only: int8, int64
     use stdlib_hashmaps, only: chaining_hashmap_type, open_hashmap_type, hashmap_type
 
     implicit none