Remove unnecessary strings in Juno Linux shutdown test

Manish B. pointed out that the URLs before the calls to get_uboot_bin
and get_scp_bl2_bin did not do anything, so I looked into it and found
that they could be removed with no other changes.

Signed-off-by: John Powell <john.powell@arm.com>
Change-Id: I73728d838798f33be6a67425c1f035c21733b29f
diff --git a/run_config/juno-manual.linuxshutdown b/run_config/juno-manual.linuxshutdown
index e6191c3..a027f0d 100644
--- a/run_config/juno-manual.linuxshutdown
+++ b/run_config/juno-manual.linuxshutdown
@@ -6,9 +6,8 @@
 #
 
 post_tf_build() {
-	# Override the default URL since it points to OE and we need Busybox
-	url="$linaro_release/juno-latest-busybox-uboot/SOFTWARE/scp_bl2.bin" get_scp_bl2_bin
-	url="$linaro_release/juno-latest-busybox-uboot/SOFTWARE/bl33-uboot.bin" get_uboot_bin
+	get_scp_bl2_bin
+	get_uboot_bin
 	build_fip BL33="$archive/uboot.bin" SCP_BL2="$archive/scp_bl2.bin"
 }