diff --git a/tracecallback_noimpl.go b/tracecallback_noimpl.go
deleted file mode 100644
index 5ededb3..0000000
--- a/tracecallback_noimpl.go
+++ /dev/null
@@ -1,55 +0,0 @@
-// +build !trace
-
-package sqlite3
-
-import "errors"
-
-// Trace... constants identify the possible events causing callback invocation.
-// Values are same as the corresponding SQLite Trace Event Codes.
-const (
-	TraceStmt    = uint32(0x01)
-	TraceProfile = uint32(0x02)
-	TraceRow     = uint32(0x04)
-	TraceClose   = uint32(0x08)
-)
-
-type TraceInfo struct {
-	// Pack together the shorter fields, to keep the struct smaller.
-	// On a 64-bit machine there would be padding
-	// between EventCode and ConnHandle; having AutoCommit here is "free":
-	EventCode  uint32
-	AutoCommit bool
-	ConnHandle uintptr
-
-	// Usually filled, unless EventCode = TraceClose = SQLITE_TRACE_CLOSE:
-	// identifier for a prepared statement:
-	StmtHandle uintptr
-
-	// Two strings filled when EventCode = TraceStmt = SQLITE_TRACE_STMT:
-	// (1) either the unexpanded SQL text of the prepared statement, or
-	//     an SQL comment that indicates the invocation of a trigger;
-	// (2) expanded SQL, if requested and if (1) is not an SQL comment.
-	StmtOrTrigger string
-	ExpandedSQL   string // only if requested (TraceConfig.WantExpandedSQL = true)
-
-	// filled when EventCode = TraceProfile = SQLITE_TRACE_PROFILE:
-	// estimated number of nanoseconds that the prepared statement took to run:
-	RunTimeNanosec int64
-}
-
-type TraceUserCallback func(TraceInfo) int
-
-type TraceConfig struct {
-	Callback        TraceUserCallback
-	EventMask       uint
-	WantExpandedSQL bool
-}
-
-// RegisterAggregator register the aggregator.
-func (c *SQLiteConn) RegisterAggregator(name string, impl interface{}, pure bool) error {
-	return errors.New("This feature is not implemented")
-}
-
-func (c *SQLiteConn) SetTrace(requested *TraceConfig) error {
-	return errors.New("This feature is not implemented")
-}