qemu: Unexport qemuBuildNetworkDriveURI()

The function isn't used in any other file. Convert it to static.

src/qemu/qemu_command.c

@@ -3605,7 +3605,7 @@ qemuNetworkDriveGetPort(int protocol,
 
 #define QEMU_DEFAULT_NBD_PORT "10809"
 
-char *
+static char *
 qemuBuildNetworkDriveURI(int protocol,
                          const char *src,
                          size_t nhosts,

src/qemu/qemu_command.h

@@ -182,13 +182,6 @@ char * qemuBuildHubDevStr(virDomainDefPtr def,
 char * qemuBuildRedirdevDevStr(virDomainDefPtr def,
                                virDomainRedirdevDefPtr dev,
                                virQEMUCapsPtr qemuCaps);
-char *qemuBuildNetworkDriveURI(int proto,
-                               const char *src,
-                               size_t nhosts,
-                               virStorageNetHostDefPtr hosts,
-                               const char *username,
-                               const char *secret);
-
 int qemuNetworkIfaceConnect(virDomainDefPtr def,
                             virConnectPtr conn,
                             virQEMUDriverPtr driver,