conf: Unexport virDomainStorageSourceFormat

It's not used outside of src/conf/domain_conf.c
Signed-off-by: NPeter Krempa <pkrempa@redhat.com>
Reviewed-by: NJán Tomko <jtomko@redhat.com>

src/conf/domain_conf.c

@@ -23716,7 +23716,7 @@ virDomainDiskSourceFormatPrivateData(virBufferPtr buf,
 }
 
 
-int
+static int
 virDomainStorageSourceFormat(virBufferPtr attrBuf,
                              virBufferPtr childBuf,
                              virStorageSourcePtr src,

src/conf/domain_conf.h

@@ -3457,11 +3457,6 @@ int virDomainDiskDefCheckDuplicateInfo(const virDomainDiskDef *a,
                                        const virDomainDiskDef *b)
     ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2);
 
-int virDomainStorageSourceFormat(virBufferPtr attrBuf,
-                                 virBufferPtr childBuf,
-                                 virStorageSourcePtr src,
-                                 unsigned int flags)
-    ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3);
 
 int virDomainStorageSourceParse(xmlNodePtr node,
                                 xmlXPathContextPtr ctxt,

src/libvirt_private.syms

@@ -564,7 +564,6 @@ virDomainStateReasonToString;
 virDomainStateTypeFromString;
 virDomainStateTypeToString;
 virDomainStorageNetworkParseHost;
-virDomainStorageSourceFormat;
 virDomainStorageSourceParse;
 virDomainTaintTypeFromString;
 virDomainTaintTypeToString;