[alert_handler] Remove duplicated parameter description

The template parameters are already described in the
`hw/ip_templates/alert_handler/data/alert_handler.tpldesc.hjson`, no
need to duplicate this content with the chance of them going out of
sync.

Also update the `tpldesc.hjson` file to use the most helpful
description.

Signed-off-by: Philipp Wagner <phw@lowrisc.org>
diff --git a/hw/ip_templates/alert_handler/data/alert_handler.hjson.tpl b/hw/ip_templates/alert_handler/data/alert_handler.hjson.tpl
index c5f045e..7323eac 100644
--- a/hw/ip_templates/alert_handler/data/alert_handler.hjson.tpl
+++ b/hw/ip_templates/alert_handler/data/alert_handler.hjson.tpl
@@ -3,15 +3,6 @@
 // SPDX-License-Identifier: Apache-2.0
 //
 # ALERT_HANDLER register template
-#
-# Parameter (given by Python tool)
-#  - n_alerts:    Number of alert sources
-#  - esc_cnt_dw:  Width of escalation counter
-#  - accu_cnt_dw: Width of accumulator
-#  - async_on:    Enables asynchronous sygnalling between specific alert RX/TX pairs
-#  - n_classes:   Number of supported classes (leave this at 4 at the moment)
-#  - n_lpg:       Number of low-power groups (LPGs)
-#  - lpg_map:     Defines a mapping from alerts to LPGs.
 <%
 import math
 chars = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H']
diff --git a/hw/ip_templates/alert_handler/data/alert_handler.tpldesc.hjson b/hw/ip_templates/alert_handler/data/alert_handler.tpldesc.hjson
index 7c604a8..c85360f 100644
--- a/hw/ip_templates/alert_handler/data/alert_handler.tpldesc.hjson
+++ b/hw/ip_templates/alert_handler/data/alert_handler.tpldesc.hjson
@@ -35,13 +35,13 @@
     },
     {
       "name": "n_lpg",
-      "desc": "Number of LPGs"
+      "desc": "Number of low-power groups (LPGs)"
       "type": "int"
       "default": 1
     },
     {
       "name": "lpg_map",
-      "desc": "Encodes the alert to LPG mapping"
+      "desc": "Defines a mapping from alerts to LPGs"
       "type": "object"
       "default": []
     },
diff --git a/hw/top_earlgrey/ip_autogen/alert_handler/data/alert_handler.hjson b/hw/top_earlgrey/ip_autogen/alert_handler/data/alert_handler.hjson
index cea96c4..0f1800e 100644
--- a/hw/top_earlgrey/ip_autogen/alert_handler/data/alert_handler.hjson
+++ b/hw/top_earlgrey/ip_autogen/alert_handler/data/alert_handler.hjson
@@ -3,15 +3,6 @@
 // SPDX-License-Identifier: Apache-2.0
 //
 # ALERT_HANDLER register template
-#
-# Parameter (given by Python tool)
-#  - n_alerts:    Number of alert sources
-#  - esc_cnt_dw:  Width of escalation counter
-#  - accu_cnt_dw: Width of accumulator
-#  - async_on:    Enables asynchronous sygnalling between specific alert RX/TX pairs
-#  - n_classes:   Number of supported classes (leave this at 4 at the moment)
-#  - n_lpg:       Number of low-power groups (LPGs)
-#  - lpg_map:     Defines a mapping from alerts to LPGs.
 
 {
   name: "ALERT_HANDLER",