[camera_avfoundation] Remove development team from Xcode example app (flutter#5930)

`DEVELOPMENT_TEAM` should not be set in the example Xcode app.  Introduced extraneously in flutter#3272

Author: jmagman

packages/camera/camera_avfoundation/CHANGELOG.md

@@ -1,5 +1,6 @@
 ## NEXT
 
+* Remove development team from example app.
 * Updates minimum iOS version to 12.0 and minimum Flutter version to 3.16.6.
 
 ## 0.9.13+10

packages/camera/camera_avfoundation/example/ios/Runner.xcodeproj/project.pbxproj

@@ -291,7 +291,6 @@
 					};
 					97C146ED1CF9000F007C117D = {
 						CreatedOnToolsVersion = 7.3.1;
-						DevelopmentTeam = W4ZTW5E78A;
 					};
 				};
 			};
@@ -514,7 +513,6 @@
 				CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = NO;
 				CLANG_WARN_UNGUARDED_AVAILABILITY = YES_AGGRESSIVE;
 				CODE_SIGN_STYLE = Automatic;
-				DEVELOPMENT_TEAM = "";
 				GCC_C_LANGUAGE_STANDARD = gnu11;
 				INFOPLIST_FILE = RunnerTests/Info.plist;
 				IPHONEOS_DEPLOYMENT_TARGET = 12.0;
@@ -544,7 +542,6 @@
 				CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = NO;
 				CLANG_WARN_UNGUARDED_AVAILABILITY = YES_AGGRESSIVE;
 				CODE_SIGN_STYLE = Automatic;
-				DEVELOPMENT_TEAM = "";
 				GCC_C_LANGUAGE_STANDARD = gnu11;
 				INFOPLIST_FILE = RunnerTests/Info.plist;
 				IPHONEOS_DEPLOYMENT_TARGET = 12.0;
@@ -672,7 +669,6 @@
 			baseConfigurationReference = 9740EEB21CF90195004384FC /* Debug.xcconfig */;
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
-				DEVELOPMENT_TEAM = W4ZTW5E78A;
 				ENABLE_BITCODE = NO;
 				FRAMEWORK_SEARCH_PATHS = (
 					"$(inherited)",
@@ -697,7 +693,6 @@
 			baseConfigurationReference = 7AFA3C8E1D35360C0083082E /* Release.xcconfig */;
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
-				DEVELOPMENT_TEAM = W4ZTW5E78A;
 				ENABLE_BITCODE = NO;
 				FRAMEWORK_SEARCH_PATHS = (
 					"$(inherited)",