diff --git a/runtime/Go/antlr/atn.go b/runtime/Go/antlr/atn.go
index 188ad548c..e999ced1d 100644
--- a/runtime/Go/antlr/atn.go
+++ b/runtime/Go/antlr/atn.go
@@ -1,8 +1,5 @@
 package antlr
 
-import "fmt"
-
-
 var ATNInvalidAltNumber int
 
 type ATN struct {
diff --git a/runtime/Go/antlr/common_token_factory.go b/runtime/Go/antlr/common_token_factory.go
index e096e1cf6..a31d4ef5f 100644
--- a/runtime/Go/antlr/common_token_factory.go
+++ b/runtime/Go/antlr/common_token_factory.go
@@ -1,7 +1,5 @@
 package antlr
 
-import "fmt"
-
 // TokenFactory creates CommonToken objects.
 type TokenFactory interface {
 	Create(source *TokenSourceCharStreamPair, ttype int, text string, channel, start, stop, line, column int) Token
diff --git a/runtime/Go/antlr/common_token_stream.go b/runtime/Go/antlr/common_token_stream.go
index 1220701ff..819086ad7 100644
--- a/runtime/Go/antlr/common_token_stream.go
+++ b/runtime/Go/antlr/common_token_stream.go
@@ -1,7 +1,6 @@
 package antlr
 
 import (
-	"fmt"
 	"strconv"
 )
 
diff --git a/runtime/Go/antlr/file_stream.go b/runtime/Go/antlr/file_stream.go
index db9c4ce78..842484cec 100644
--- a/runtime/Go/antlr/file_stream.go
+++ b/runtime/Go/antlr/file_stream.go
@@ -2,7 +2,6 @@ package antlr
 
 import (
 	"bytes"
-	"fmt"
 	"io"
 	"os"
 )
diff --git a/runtime/Go/antlr/input_stream.go b/runtime/Go/antlr/input_stream.go
index c18ab591b..fc17e4d03 100644
--- a/runtime/Go/antlr/input_stream.go
+++ b/runtime/Go/antlr/input_stream.go
@@ -1,7 +1,5 @@
 package antlr
 
-import "fmt"
-
 type InputStream struct {
 	name  string
 	index int
diff --git a/runtime/Go/antlr/interval_set.go b/runtime/Go/antlr/interval_set.go
index 1b202c42d..909ab1b14 100644
--- a/runtime/Go/antlr/interval_set.go
+++ b/runtime/Go/antlr/interval_set.go
@@ -1,7 +1,6 @@
 package antlr
 
 import (
-	"fmt"
 	"strconv"
 	"strings"
 )
diff --git a/runtime/Go/antlr/lexer_action_executor.go b/runtime/Go/antlr/lexer_action_executor.go
index f750ec8b7..bb5ef924d 100644
--- a/runtime/Go/antlr/lexer_action_executor.go
+++ b/runtime/Go/antlr/lexer_action_executor.go
@@ -1,9 +1,5 @@
 package antlr
 
-import (
-	"fmt"
-)
-
 // Represents an executor for a sequence of lexer actions which traversed during
 // the Matching operation of a lexer rule (token).
 //
diff --git a/runtime/Go/antlr/ll1_analyzer.go b/runtime/Go/antlr/ll1_analyzer.go
index 8f9fa641a..2f11ad3c4 100644
--- a/runtime/Go/antlr/ll1_analyzer.go
+++ b/runtime/Go/antlr/ll1_analyzer.go
@@ -1,9 +1,5 @@
 package antlr
 
-import (
-	"fmt"
-)
-
 type LL1Analyzer struct {
 	atn *ATN
 }