Simplify .editorconfig file

Removes unnecessary eclint settings, explicit indent_size for tabs,
and LICENSE section. This aligns with the standard WordPress core
.editorconfig configuration used across other plugins.

Author: GaryJones

.editorconfig

@@ -13,10 +13,6 @@ end_of_line = lf
 insert_final_newline = true
 trim_trailing_whitespace = true
 indent_style = tab
-indent_size = 4
-eclint_block_comment_start = /*
-eclint_block_comment = *
-eclint_block_comment_end = */
 
 [*.yml]
 indent_style = space
@@ -27,6 +23,3 @@ trim_trailing_whitespace = false
 
 [*.txt]
 end_of_line = crlf
-
-[LICENSE]
-indent_style = unset