remove unnecessary doc comments

chars.go

@@ -4,7 +4,6 @@ import (
 	"strings"
 )
 
-// Validation error.
 var (
 	ErrDisallowedChars = NewError("contains disallowed characters")
 )

email.go

@@ -4,7 +4,6 @@ import (
 	"regexp"
 )
 
-// Validation error.
 var (
 	ErrInvalidEmail = NewError("invalid email address")
 )

in.go

@@ -1,6 +1,5 @@
 package validate
 
-// Validation error.
 var (
 	ErrValueNotAllowed = NewError("not allowed")
 )

length.go

@@ -1,6 +1,5 @@
 package validate
 
-// Validation error.
 var (
 	ErrMustBeLonger  = NewError("must contain at least %d characters")
 	ErrMustBeShorter = NewError("must contain no more than %d characters")

number.go

@@ -1,6 +1,5 @@
 package validate
 
-// Validation error.
 var (
 	ErrMustBeGreater        = NewError("must be greater than %v")
 	ErrMustBeGreaterOrEqual = NewError("must be greater than or equal to %v")

size.go

@@ -1,6 +1,5 @@
 package validate
 
-// Validation error.
 var (
 	ErrMustHaveMoreItems  = NewError("must have at least %d items")
 	ErrMustHaveFewerItems = NewError("must have no more than %d items")

url.go

@@ -2,7 +2,6 @@ package validate
 
 import "net/url"
 
-// Validation error.
 var (
 	ErrInvalidURL Error = NewError("invalid URL")
 )

uuid.go

@@ -4,7 +4,6 @@ import (
 	"regexp"
 )
 
-// Validation error.
 var (
 	ErrInvalidUUID = NewError("invalid UUID")
 )