treewide: clean up stray license blurbs

After the mechanical change in fcb8d040e8
("treewide: use Software Package Data Exchange (SPDX) license identifiers"),
a few stray license blurbs or fragments thereof remain. In two cases
these were extra blurbs in code generators intended for the generated code,
in others they were just missed by the script.

Clean them up, adding an SPDX license identifier where needed.

Closes #10072

dht/token_range_endpoints.hh

@@ -2,22 +2,8 @@
  * Copyright (C) 2015-present ScyllaDB.
  */
 
-/*
- * This file is part of Scylla.
- *
- * Scylla is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Scylla is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General License for more details.
- *
- * You should have received a copy of the GNU General License
- * along with Scylla.  If not, see <http://www.gnu.org/licenses/>.
- */
+
+// SPDX-License-Identifier: AGPL-3.0-or-later
 
 #pragma once
 #include <vector>

gen_segmented_compress_params.py

@@ -116,22 +116,7 @@ file_str = """
  * Copyright (C) 2017-present ScyllaDB
  */
 
-/*
- * This file is part of Scylla.
- *
- * Scylla is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Scylla is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Scylla.  If not, see <http://www.gnu.org/licenses/>.
- */
+// SPDX-License-Identifier: AGPL-3.0-or-later
 
 /*
  * This file was autogenerated by gen_segmented_compress_params.py.

idl-compiler.py

@@ -47,23 +47,7 @@ def print_cw(f):
  * Copyright 2016-present ScyllaDB
  */
 
-/*
- * This file is part of Scylla.
- *
- * Scylla is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Scylla is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Scylla.  If not, see <http://www.gnu.org/licenses/>.
- */
-
+// SPDX-License-Identifier: AGPL-3.0-or-later
 
  /*
   * This is an auto-generated code, do not modify directly.

test/boost/aggregate_fcts_test.cc

@@ -3,8 +3,6 @@
  */
 
 /*
- * This file is part of Scylla.
- *
  * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 

test/boost/big_decimal_test.cc

@@ -3,8 +3,6 @@
  */
 
 /*
- * This file is part of Scylla.
- *
  * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 

test/lib/simple_position_reader_queue.hh

@@ -3,8 +3,6 @@
  */
 
 /*
- * This file is part of Scylla.
- *
  * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 

test/perf/perf_big_decimal.cc

@@ -3,8 +3,6 @@
  */
 
 /*
- * This file is part of Scylla.
- *
  * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 

test/perf/perf_checksum.cc

@@ -3,8 +3,6 @@
  */
 
 /*
- * This file is part of Scylla.
- *
  * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 

test/perf/perf_idl.cc

@@ -3,8 +3,6 @@
  */
 
 /*
- * This file is part of Scylla.
- *
  * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 

test/perf/perf_mutation_fragment.cc

@@ -3,8 +3,6 @@
  */
 
 /*
- * This file is part of Scylla.
- *
  * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 

test/perf/perf_mutation_readers.cc

@@ -3,8 +3,6 @@
  */
 
 /*
- * This file is part of Scylla.
- *
  * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 

test/perf/perf_vint.cc

@@ -3,8 +3,6 @@
  */
 
 /*
- * This file is part of Scylla.
- *
  * SPDX-License-Identifier: AGPL-3.0-or-later
  */