Clean up #included files in src/include directories (#1518)

[jrgemignani]

Cleaned up #included files in the .h files in the src/include directories.

Additionally, deleted 1 unnecessary header file.

modified: src/include/catalog/ag_catalog.h
modified: src/include/catalog/ag_graph.h
modified: src/include/catalog/ag_label.h
modified: src/include/catalog/ag_namespace.h
modified: src/include/commands/graph_commands.h
modified: src/include/commands/label_commands.h
modified: src/include/executor/cypher_executor.h
modified: src/include/executor/cypher_utils.h
modified: src/include/nodes/ag_nodes.h
modified: src/include/nodes/cypher_copyfuncs.h
modified: src/include/nodes/cypher_nodes.h
modified: src/include/nodes/cypher_outfuncs.h
modified: src/include/nodes/cypher_readfuncs.h
modified: src/include/optimizer/cypher_createplan.h
modified: src/include/optimizer/cypher_pathnode.h
modified: src/include/parser/cypher_clause.h
modified: src/include/parser/cypher_expr.h
modified: src/include/parser/cypher_gram.h
modified: src/include/parser/cypher_item.h
modified: src/include/parser/cypher_parse_node.h
modified: src/include/parser/cypher_parser.h
modified: src/include/parser/cypher_transform_entity.h
modified: src/include/utils/ag_cache.h
modified: src/include/utils/ag_float8_supp.h
modified: src/include/utils/ag_func.h
modified: src/include/utils/age_global_graph.h
modified: src/include/utils/agtype.h
modified: src/include/utils/agtype_parser.h
modified: src/include/utils/agtype_raw.h
modified: src/include/utils/graphid.h
modified: src/include/utils/load/ag_load_edges.h
modified: src/include/utils/load/ag_load_labels.h
modified: src/include/utils/load/age_load.h
deleted: src/include/utils/ag_load.h

[rafsun42]

@jrgemignani The changes in age_load.c in #1538 is not present in this PR. I am just curious if this is this intentional? Otherwise, looks good.

[dehowef]

@jrgemignani The changes in age_load.c in #1538 is not present in this PR. I am just curious if this is this intentional? Otherwise, looks good.

It does not break anything with the tests, which leads me to think that it's fine, so I approved these changes, but I'll leave this unmerged for John to comment on. @rafsun42@jrgemignani

[jrgemignani]

@jrgemignani The changes in age_load.c in #1538 is not present in this PR. I am just curious if this is this intentional? Otherwise, looks good.

Each version needs some tweaking due to the changes in PostgreSQL for that version. So, it is expected that there will be some differences between the PRs for each version. The only time it is obvious is when there are conflicts that Github can't resolve.