excel remove array from cell code example

Example: how do i remove an array in excel

{
	"resource": "/Users/ranahaza/Desktop/DiscordJS/package.json",
	"owner": "_generated_diagnostic_collection_name_#0",
	"severity": 4,
	"message": "String does not match the pattern of \"^(?:@[a-z0-9-*~][a-z0-9-*._~]*/)?[a-z0-9-~][a-z0-9-._~]*$\".",
	"startLineNumber": 2,
	"startColumn": 11,
	"endLineNumber": 2,
	"endColumn": 22
}