Remove eraseToStream now that any AsyncSequence is available to us. (#4836)

* Remove `eraseToStream` now that `any AsyncSequence` is available to us.

* Remove the now unnecessary backport of Mutex.

* Silence a couple more deprecation warnings.

ElementX/SupportingFiles/Settings.bundle/Acknowledgements.plist

@@ -210,14 +210,6 @@
 			<key>Type</key>
 			<string>PSChildPaneSpecifier</string>
 		</dict>
-		<dict>
-			<key>File</key>
-			<string>Packages/Mutex</string>
-			<key>Title</key>
-			<string>Mutex</string>
-			<key>Type</key>
-			<string>PSChildPaneSpecifier</string>
-		</dict>
 		<dict>
 			<key>File</key>
 			<string>Packages/swift-numerics</string>

ElementX/SupportingFiles/Settings.bundle/Packages/Mutex.plist

@@ -1,36 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-<plist version="1.0">
-<dict>
-	<key>PreferenceSpecifiers</key>
-	<array>
-		<dict>
-			<key>FooterText</key>
-			<string>MIT License
-
-Copyright (c) 2023 Simon Whitty
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
-</string>
-			<key>Type</key>
-			<string>PSGroupSpecifier</string>
-		</dict>
-	</array>
-</dict>
-</plist>

ElementX/SupportingFiles/target.yml

@@ -235,7 +235,6 @@ targets:
     - package: LoremSwiftum
     - package: LRUCache
     - package: Mapbox
-    - package: Mutex
     - package: PostHog
     - package: SwiftState
     - package: GZIP