LPS-50962 remove file size validation from DLStoreImpl.addFile

Remove file size validation from method addFile(long, long, String,
boolean, byte[]).

With the exception of DLHook, all callers are safe:
  - JarUtil.downloadAndInstallJar
  - KBArticleAttachmentsUtil.updateAttachments
  - VerifiyDocumentLibrary.copyDLFileEntry
  - BaseUpgradeAttachments
  - UpgradeImageGallery.migrateFile

For all these cases, files already exist in the system, so that it is
safe to remove the validation from DLStore.
LPS-50962 remove file size validation from DLStoreImpl.addFile (2)

Remove file size validation from DLStoreImpl.addFile(long, long, String,
boolean, File).

This method is invoked from:
  - DLFileEntryLocalService.addFile, which already invokes the
  validation itself.
  - DLPreviewableProcessor, that itself limits the file size as defined
  by the dl.file.entry.previewable.processor.max.size property.
LPS-50963 remove file size validation from DLStoreImpl.addFile (3)

As in the previous commit, this method is called by:
  - DLFileEntryLocalService, which does the validation itself.
  - DLPreviewableProcess, which also limits the max. file size.
LPS-50962 remove file size validation from DLStoreImpl.updateFile

This method is called from the DLFileEntry services, which already do
file size validation.
LPS-50962 remove file size validation from updateFile (2)

As before, file size has already been validated when this method is
called.