Fix incorrect code search indexer options (go-gitea#33992)

Fix go-gitea#33798

Co-authored-by: Giteabot <teabot@gitea.io>

Author: wxiaoguang

modules/indexer/code/bleve/bleve.go

@@ -28,7 +28,6 @@ import (
 	"github.com/blevesearch/bleve/v2"
 	analyzer_custom "github.com/blevesearch/bleve/v2/analysis/analyzer/custom"
 	analyzer_keyword "github.com/blevesearch/bleve/v2/analysis/analyzer/keyword"
-	"github.com/blevesearch/bleve/v2/analysis/token/camelcase"
 	"github.com/blevesearch/bleve/v2/analysis/token/lowercase"
 	"github.com/blevesearch/bleve/v2/analysis/token/unicodenorm"
 	"github.com/blevesearch/bleve/v2/analysis/tokenizer/letter"
@@ -70,7 +69,7 @@ const (
 	filenameIndexerAnalyzer  = "filenameIndexerAnalyzer"
 	filenameIndexerTokenizer = "filenameIndexerTokenizer"
 	repoIndexerDocType       = "repoIndexerDocType"
-	repoIndexerLatestVersion = 8
+	repoIndexerLatestVersion = 9
 )
 
 // generateBleveIndexMapping generates a bleve index mapping for the repo indexer
@@ -107,7 +106,7 @@ func generateBleveIndexMapping() (mapping.IndexMapping, error) {
 		"type":          analyzer_custom.Name,
 		"char_filters":  []string{},
 		"tokenizer":     letter.Name,
-		"token_filters": []string{unicodeNormalizeName, camelcase.Name, lowercase.Name},
+		"token_filters": []string{unicodeNormalizeName, lowercase.Name},
 	}); err != nil {
 		return nil, err
 	}