[dv/chip] Remove a TODO from all_escalation_test

This PR removes the TODO in chip_sw_all_escalation_vseq related to
`TopEarlgreyAlertIdFlashCtrlFatalErr`.
This test is implemented in a separate sequence -
chip_sw_flash_host_gnt_err_inj_vseq.

Signed-off-by: Cindy Chen <chencindy@opentitan.org>

hw/top_earlgrey/dv/env/seq_lib/chip_sw_all_escalation_resets_vseq.sv

diff --git a/hw/top_earlgrey/dv/env/seq_lib/chip_sw_all_escalation_resets_vseq.sv b/hw/top_earlgrey/dv/env/seq_lib/chip_sw_all_escalation_resets_vseq.sv
index bba19c2..387928b 100644
--- a/hw/top_earlgrey/dv/env/seq_lib/chip_sw_all_escalation_resets_vseq.sv
+++ b/hw/top_earlgrey/dv/env/seq_lib/chip_sw_all_escalation_resets_vseq.sv
@@ -23,7 +23,8 @@
     '{"*edn1*prim_reg_we_check*", TopEarlgreyAlertIdEdn1FatalAlert},
     '{"*entropy_src*prim_reg_we_check*", TopEarlgreyAlertIdEntropySrcFatalAlert},
     '{"*flash_ctrl*prim_reg_we_check*", TopEarlgreyAlertIdFlashCtrlFatalStdErr},
-    // TODO test u_eflash.u_flash alert TopEarlgreyAlertIdFlashCtrlFatalErr
+    // test u_eflash.u_flash alert TopEarlgreyAlertIdFlashCtrlFatalErr is implemented in the
+    // `chip_sw_flash_host_gnt_err_inj_vseq` sequence.
     // TODO TopEarlgreyAlertIdFlashCtrlFatalPrimFlashAlert.
     '{"*gpio*prim_reg_we_check*", TopEarlgreyAlertIdGpioFatalFault},
     '{"*hmac*prim_reg_we_check*", TopEarlgreyAlertIdHmacFatalFault},