[sw/autogen] remove meson.build templates

Since we have removed all `meson.build` files in a prior commit, we no
longer should generate these build files.

Signed-off-by: Timothy Trippel <ttrippel@google.com>
diff --git a/util/autogen_testutils/gen.py b/util/autogen_testutils/gen.py
index 0616819..e58b328 100644
--- a/util/autogen_testutils/gen.py
+++ b/util/autogen_testutils/gen.py
@@ -58,13 +58,11 @@
                                               comment=comment_syntax)))
 
             # Format autogenerated file with clang-format.
-            # Note: do not format meson build file.
-            if testutils.suffix != ".build":
-                try:
-                    subprocess.check_call(["clang-format", "-i", testutils])
-                except subprocess.CalledProcessError:
-                    logging.error(
-                        f"failed to format {testutils} with clang-format.")
-                    sys.exit(1)
+            try:
+                subprocess.check_call(["clang-format", "-i", testutils])
+            except subprocess.CalledProcessError:
+                logging.error(
+                    f"failed to format {testutils} with clang-format.")
+                sys.exit(1)
 
             print(f"testutils successfully written to {str(testutils)}.")
diff --git a/util/autogen_testutils/templates/meson.build.tpl b/util/autogen_testutils/templates/meson.build.tpl
deleted file mode 100644
index 5f19009..0000000
--- a/util/autogen_testutils/templates/meson.build.tpl
+++ /dev/null
@@ -1,20 +0,0 @@
-# Copyright lowRISC contributors.
-# Licensed under the Apache License, Version 2.0, see LICENSE for details.
-# SPDX-License-Identifier: Apache-2.0
-
-${autogen_banner}
-
-# ISR test utilities
-sw_lib_testing_isr_testutils = declare_dependency(
-  link_with: static_library(
-    'sw_lib_testing_isr_testutils',
-    sources: ['isr_testutils.c'],
-    dependencies: [
-% for ip in ips_with_difs:
-  % if ip.irqs:
-      sw_lib_dif_${ip.name_snake},
-  % endif
-% endfor
-    ],
-  ),
-)
diff --git a/util/topgen.py b/util/topgen.py
index bb266f2..7f7d608 100755
--- a/util/topgen.py
+++ b/util/topgen.py
@@ -1280,7 +1280,7 @@
 
         # Auto-generate tests in "sw/device/tests/autogen" area.
         gencmd = warnhdr + GENCMD.format(topname=topname)
-        for fname in ["plic_all_irqs_test.c", "alert_test.c", "meson.build", "BUILD"]:
+        for fname in ["plic_all_irqs_test.c", "alert_test.c", "BUILD"]:
             outfile = SRCTREE_TOP / "sw/device/tests/autogen" / fname
             render_template(TOPGEN_TEMPLATE_PATH / f"{fname}.tpl",
                             outfile,
diff --git a/util/topgen/templates/meson.build.tpl b/util/topgen/templates/meson.build.tpl
deleted file mode 100644
index fccb098..0000000
--- a/util/topgen/templates/meson.build.tpl
+++ /dev/null
@@ -1,58 +0,0 @@
-# Copyright lowRISC contributors.
-# Licensed under the Apache License, Version 2.0, see LICENSE for details.
-# SPDX-License-Identifier: Apache-2.0
-${gencmd.replace("//", "#")}
-
-<%
-irq_peripheral_names = sorted({p.name for p in helper.irq_peripherals})
-alert_peripheral_names = sorted({p.name for p in helper.alert_peripherals})
-%>\
-# IP Integration Tests
-plic_all_irqs_test_lib = declare_dependency(
-  link_with: static_library(
-    'plic_all_irqs_test_lib',
-    sources: [
-      'plic_all_irqs_test.c',
-    ],
-    dependencies: [
-      sw_lib_irq,
-      sw_lib_mmio,
-% for n in sorted(irq_peripheral_names + ["rv_plic"]):
-      sw_lib_dif_${n},
-% endfor
-      sw_lib_runtime_log,
-      sw_lib_testing_rv_plic_testutils,
-      sw_lib_testing_test_status,
-      top_earlgrey,
-    ],
-  ),
-)
-sw_tests += {
-  'plic_all_irqs_test': {
-    'library': plic_all_irqs_test_lib,
-  }
-}
-
-alert_test_lib = declare_dependency(
-  link_with: static_library(
-    'alert_test_lib',
-    sources: [hw_ip_alert_handler_reg_h,
-    'alert_test.c'],
-    dependencies: [
-      sw_lib_mem,
-      sw_lib_mmio,
-      sw_lib_testing_alert_handler_testutils,
-      sw_lib_dif_rv_plic,
-      sw_lib_runtime_log,
-      sw_lib_testing_test_status,
-% for n in sorted(alert_peripheral_names):
-      sw_lib_dif_${n},
-% endfor
-    ],
-  ),
-)
-sw_tests += {
-  'alert_test': {
-    'library': alert_test_lib,
-  }
-}