Remove unused funcs and vars

Signed-off-by: Bogdan Drutu <bogdandrutu@gmail.com>

cmd/pdatagen/internal/base_fields.go

@@ -124,8 +124,6 @@ type baseField interface {
 	generateSetWithTestValue(sb *strings.Builder)
 
 	generateCopyToValue(sb *strings.Builder)
-
-	generateIsEmpty(sb *strings.Builder)
 }
 
 type sliceField struct {
@@ -134,10 +132,6 @@ type sliceField struct {
 	returnSlice     *sliceStruct
 }
 
-func (sf *sliceField) generateIsEmpty(sb *strings.Builder) {
-	sb.WriteString("\tms." + sf.fieldName + "().IsEmpty()")
-}
-
 func (sf *sliceField) generateAccessors(ms baseStruct, sb *strings.Builder) {
 	sb.WriteString(os.Expand(accessorSliceTemplate, func(name string) string {
 		switch name {
@@ -231,10 +225,6 @@ func (mf *messagePtrField) generateCopyToValue(sb *strings.Builder) {
 	sb.WriteString("\tms." + mf.fieldName + "().CopyTo(dest." + mf.fieldName + "())")
 }
 
-func (mf *messagePtrField) generateIsEmpty(sb *strings.Builder) {
-	sb.WriteString("\tms." + mf.fieldName + "().IsEmpty())")
-}
-
 var _ baseField = (*messagePtrField)(nil)
 
 type messageValueField struct {
@@ -287,10 +277,6 @@ func (mf *messageValueField) generateCopyToValue(sb *strings.Builder) {
 	sb.WriteString("\tms." + mf.fieldName + "().CopyTo(dest." + mf.fieldName + "())")
 }
 
-func (mf *messageValueField) generateIsEmpty(sb *strings.Builder) {
-	sb.WriteString("\tms." + mf.fieldName + "().IsEmpty())")
-}
-
 var _ baseField = (*messageValueField)(nil)
 
 type primitiveField struct {
@@ -345,10 +331,6 @@ func (pf *primitiveField) generateCopyToValue(sb *strings.Builder) {
 	sb.WriteString("\tdest.Set" + pf.fieldName + "(ms." + pf.fieldName + "())")
 }
 
-func (pf *primitiveField) generateIsEmpty(sb *strings.Builder) {
-	sb.WriteString("\tms." + pf.fieldName + "() == " + pf.defaultVal)
-}
-
 var _ baseField = (*primitiveField)(nil)
 
 // Types that has defined a custom type (e.g. "type TimestampUnixNano uint64")
@@ -414,10 +396,6 @@ func (ptf *primitiveTypedField) generateCopyToValue(sb *strings.Builder) {
 	sb.WriteString("\tdest.Set" + ptf.fieldName + "(ms." + ptf.fieldName + "())")
 }
 
-func (ptf *primitiveTypedField) generateIsEmpty(sb *strings.Builder) {
-	sb.WriteString("\tms." + ptf.fieldName + "() == " + ptf.defaultVal)
-}
-
 var _ baseField = (*primitiveTypedField)(nil)
 
 // oneofField is used in case where the proto defines an "oneof".
@@ -442,8 +420,4 @@ func (one oneofField) generateCopyToValue(sb *strings.Builder) {
 	sb.WriteString("\t" + one.copyFuncName + "((*ms.orig), (*dest.orig))")
 }
 
-func (one oneofField) generateIsEmpty(sb *strings.Builder) {
-	sb.WriteString("\t true /* oneof */")
-}
-
 var _ baseField = (*oneofField)(nil)

cmd/pdatagen/internal/base_structs.go

@@ -354,8 +354,6 @@ type ${structName} struct {
 	orig *${originName}
 }
 
-var emptyValue${structName} = ${originName}{}
-
 func new${structName}(orig *${originName}) ${structName} {
 	return ${structName}{orig: orig}
 }

consumer/pdata/common.go

@@ -615,11 +615,6 @@ func (am AttributeMap) UpsertBool(k string, v bool) {
 	}
 }
 
-// IsEmpty returns true if the underlying data are equivalent with an empty message.
-func (am AttributeMap) IsEmpty() bool {
-	return len(*am.orig) == 0
-}
-
 // Sort sorts the entries in the AttributeMap so two instances can be compared.
 // Returns the same instance to allow nicer code like:
 // assert.EqualValues(t, expected.Sort(), actual.Sort())