config: fix luminary jtag config

When this config was updated in commit e3773e3e3d
the old jtag declaration was not removed.

Signed-off-by: Spencer Oliver <ntfreak@users.sourceforge.net>

tcl/target/stellaris.cfg

@@ -38,9 +38,6 @@ if { [info exists WORKAREASIZE ] } {
    set _WORKAREASIZE 0x2000
 }
 
-jtag newtap $_CHIPNAME cpu -irlen 4 -irmask 0xf \
-	-expected-id $_CPUTAPID -ignore-version
-
 set _TARGETNAME $_CHIPNAME.cpu
 target create $_TARGETNAME cortex_m3 -chain-position $_CHIPNAME.cpu