Removing old TODO for dropped requirement

We are going to live with the workaround we've had in place for
several years now.

Change-Id: I7966f517cac2d820dc086c163a7985112e2d0fa3
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/53465
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP HW <op-hw-jenkins+hostboot@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>

src/usr/isteps/istep10/call_proc_cen_ref_clk_enable.C

@@ -832,10 +832,8 @@ void* call_proc_cen_ref_clk_enable(void *io_pArgs )
                 "target HUID %.8X",
                 TARGETING::get_huid( *l_proc_iter ));
 
-        //Perform a workaround for GA1 to raise fences on centaurs
-        //to prevent FSP from analyzing if HB TIs for recoverable
-        //errors
-        //RTC 106276
+        //Raise fences on centaurs to prevent FSP from analyzing
+        // if HB TIs for recoverable errors
         fenceAttachedMembufs( *l_proc_iter );
 
         TRACFCOMP(ISTEPS_TRACE::g_trac_isteps_trace,