Rename functions to make code more readable

internal/symbolizer/symbolizer.go

 			missingBinaries = true
 			continue
 		}
-		
+
 		// Skip well-known system mappings
 		name := filepath.Base(m.File)
 		if name == "[vdso]" || strings.HasPrefix(name, "linux-vdso") {

profile/filter.go

 // FilterTagsByName filters the tags in a profile and only keeps
 // tags that match show and not hide.
 func (p *Profile) FilterTagsByName(show, hide *regexp.Regexp) (sm, hm bool) {
-	matchShow := func(name string) bool {
+	matchRemove := func(name string) bool {
 		matchShow := show == nil || show.MatchString(name)
 		matchHide := hide != nil && hide.MatchString(name)
 
 		if matchHide {
 			hm = true
 		}
-		return matchShow && !matchHide
+		return !matchShow || matchHide
 	}
 	for _, s := range p.Sample {
 		for lab := range s.Label {
-			if !matchShow(lab) {
+			if matchRemove(lab) {
 				delete(s.Label, lab)
 			}
 		}
 		for lab := range s.NumLabel {
-			if !matchShow(lab) {
+			if matchRemove(lab) {
 				delete(s.NumLabel, lab)
 			}
 		}