update to go1.23 and replace golang.org/x/exp/maps with stdlib maps

vendor/golang.org/x/exp/LICENSE

@@ -1,27 +0,0 @@
-Copyright (c) 2009 The Go Authors. All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are
-met:
-
-   * Redistributions of source code must retain the above copyright
-notice, this list of conditions and the following disclaimer.
-   * Redistributions in binary form must reproduce the above
-copyright notice, this list of conditions and the following disclaimer
-in the documentation and/or other materials provided with the
-distribution.
-   * Neither the name of Google Inc. nor the names of its
-contributors may be used to endorse or promote products derived from
-this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

vendor/golang.org/x/exp/PATENTS

@@ -1,22 +0,0 @@
-Additional IP Rights Grant (Patents)
-
-"This implementation" means the copyrightable works distributed by
-Google as part of the Go project.
-
-Google hereby grants to You a perpetual, worldwide, non-exclusive,
-no-charge, royalty-free, irrevocable (except as stated in this section)
-patent license to make, have made, use, offer to sell, sell, import,
-transfer and otherwise run, modify and propagate the contents of this
-implementation of Go, where such license applies only to those patent
-claims, both currently owned or controlled by Google and acquired in
-the future, licensable by Google that are necessarily infringed by this
-implementation of Go.  This grant does not include claims that would be
-infringed only as a consequence of further modification of this
-implementation.  If you or your agent or exclusive licensee institute or
-order or agree to the institution of patent litigation against any
-entity (including a cross-claim or counterclaim in a lawsuit) alleging
-that this implementation of Go or any code incorporated within this
-implementation of Go constitutes direct or contributory patent
-infringement, or inducement of patent infringement, then any patent
-rights granted to you under this License for this implementation of Go
-shall terminate as of the date such litigation is filed.

vendor/golang.org/x/exp/maps/maps.go

@@ -1,94 +0,0 @@
-// Copyright 2021 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Package maps defines various functions useful with maps of any type.
-package maps
-
-// Keys returns the keys of the map m.
-// The keys will be in an indeterminate order.
-func Keys[M ~map[K]V, K comparable, V any](m M) []K {
-	r := make([]K, 0, len(m))
-	for k := range m {
-		r = append(r, k)
-	}
-	return r
-}
-
-// Values returns the values of the map m.
-// The values will be in an indeterminate order.
-func Values[M ~map[K]V, K comparable, V any](m M) []V {
-	r := make([]V, 0, len(m))
-	for _, v := range m {
-		r = append(r, v)
-	}
-	return r
-}
-
-// Equal reports whether two maps contain the same key/value pairs.
-// Values are compared using ==.
-func Equal[M1, M2 ~map[K]V, K, V comparable](m1 M1, m2 M2) bool {
-	if len(m1) != len(m2) {
-		return false
-	}
-	for k, v1 := range m1 {
-		if v2, ok := m2[k]; !ok || v1 != v2 {
-			return false
-		}
-	}
-	return true
-}
-
-// EqualFunc is like Equal, but compares values using eq.
-// Keys are still compared with ==.
-func EqualFunc[M1 ~map[K]V1, M2 ~map[K]V2, K comparable, V1, V2 any](m1 M1, m2 M2, eq func(V1, V2) bool) bool {
-	if len(m1) != len(m2) {
-		return false
-	}
-	for k, v1 := range m1 {
-		if v2, ok := m2[k]; !ok || !eq(v1, v2) {
-			return false
-		}
-	}
-	return true
-}
-
-// Clear removes all entries from m, leaving it empty.
-func Clear[M ~map[K]V, K comparable, V any](m M) {
-	for k := range m {
-		delete(m, k)
-	}
-}
-
-// Clone returns a copy of m.  This is a shallow clone:
-// the new keys and values are set using ordinary assignment.
-func Clone[M ~map[K]V, K comparable, V any](m M) M {
-	// Preserve nil in case it matters.
-	if m == nil {
-		return nil
-	}
-	r := make(M, len(m))
-	for k, v := range m {
-		r[k] = v
-	}
-	return r
-}
-
-// Copy copies all key/value pairs in src adding them to dst.
-// When a key in src is already present in dst,
-// the value in dst will be overwritten by the value associated
-// with the key in src.
-func Copy[M1 ~map[K]V, M2 ~map[K]V, K comparable, V any](dst M1, src M2) {
-	for k, v := range src {
-		dst[k] = v
-	}
-}
-
-// DeleteFunc deletes any key/value pairs from m for which del returns true.
-func DeleteFunc[M ~map[K]V, K comparable, V any](m M, del func(K, V) bool) {
-	for k, v := range m {
-		if del(k, v) {
-			delete(m, k)
-		}
-	}
-}