Update generic.go (#1343)

Generic API keys like shown in the example below is getting excluded:
api_key=9e107d9d372bb6826bd81d3542a419d6 because of following regex patterns:

\b[A-Fa-f0-9]{32}\b
\b[A-Fa-f0-9x]{6,99}\b

The base64 decoding logic is getting hit and NOT returning an error, and thus it continues thinking it is base64 decoded.

pkg/detectors/generic/generic.go

@@ -20,15 +20,13 @@ func New() Scanner {
 		`[A-Z]{2,6}\-[0-9]{2,6}`, // issue tracker
 		`#[a-fA-F0-9]{6}\b`,      // hex color code
 		`\b[A-Fa-f0-9]{64}\b`,    // hex encoded hash
-		`\b[A-Fa-f0-9]{32}\b`,    // hex encoded hash
 		`https?:\/\/(www\.)?[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_\+.~#?&//=]*)`, // http
 		`\b([/]{0,1}([\w]+[/])+[\w\.]*)\b`,                 // filepath
 		`([0-9A-F]{2}[:-]){5}([0-9A-F]{2})`,                // MAC addr
 		`\d{4}[-/]{1}([0]\d|1[0-2])[-/]{1}([0-2]\d|3[01])`, // date
 		`[v|\-]\d\.\d`, //version
 		`\d\.\d\.\d-`,  //version
 		`[\d]{1,3}\.[\d]{1,3}\.[\d]{1,3}\.[\d]{1,3}`,      // IPs and OIDs
-		`\b[A-Fa-f0-9x]{6,99}\b`,                          // hex encoding
 		`[A-Fa-f0-9x]{2}:[A-Fa-f0-9x]{2}:[A-Fa-f0-9x]{2}`, // hex encoding
 		`[\w]+\([\w, ]+\)`,                                // function
 	}