MM-39690: Clean up some unnecessary logs (#20368)

These logs would appear at every request
and didn't have any useful info for the admin.
It was more of a developer logging thing
and therefore removing it.

https://mattermost.atlassian.net/browse/MM-39690
```release-note
NONE
```

app/file_test.go

@@ -442,7 +442,6 @@ func TestSearchFilesInTeamForUser(t *testing.T) {
 
 		es := &mocks.SearchEngineInterface{}
 		es.On("SearchFiles", mock.Anything, mock.Anything, page, perPage).Return(resultsPage, nil)
-		es.On("GetName").Return("mock")
 		es.On("Start").Return(nil).Maybe()
 		es.On("IsActive").Return(true)
 		es.On("IsSearchEnabled").Return(true)
@@ -471,7 +470,6 @@ func TestSearchFilesInTeamForUser(t *testing.T) {
 
 		es := &mocks.SearchEngineInterface{}
 		es.On("SearchFiles", mock.Anything, mock.Anything, page, perPage).Return(resultsPage, nil)
-		es.On("GetName").Return("mock")
 		es.On("Start").Return(nil).Maybe()
 		es.On("IsActive").Return(true)
 		es.On("IsSearchEnabled").Return(true)

app/post_test.go

@@ -1464,7 +1464,6 @@ func TestSearchPostsForUser(t *testing.T) {
 
 		es := &mocks.SearchEngineInterface{}
 		es.On("SearchPosts", mock.Anything, mock.Anything, page, perPage).Return(resultsPage, nil, nil)
-		es.On("GetName").Return("mock")
 		es.On("Start").Return(nil).Maybe()
 		es.On("IsActive").Return(true)
 		es.On("IsSearchEnabled").Return(true)
@@ -1492,7 +1491,6 @@ func TestSearchPostsForUser(t *testing.T) {
 
 		es := &mocks.SearchEngineInterface{}
 		es.On("SearchPosts", mock.Anything, mock.Anything, page, perPage).Return(resultsPage, nil, nil)
-		es.On("GetName").Return("mock")
 		es.On("Start").Return(nil).Maybe()
 		es.On("IsActive").Return(true)
 		es.On("IsSearchEnabled").Return(true)