8345286: Remove use of SecurityManager API from misc areas

Reviewed-by: alanb, kevinw, sgehwolf

src/java.base/share/classes/java/io/FilePermission.java

@@ -283,7 +283,6 @@ public final class FilePermission extends Permission implements Serializable {
      * @param mask the actions mask to use.
      *
      */
-    @SuppressWarnings("removal")
     private void init(int mask) {
         if ((mask & ALL) != mask)
                 throw new IllegalArgumentException("invalid actions mask");

src/java.base/share/classes/java/lang/String.java

@@ -549,7 +549,6 @@ public final class String
      * Important: parameter order of this method is deliberately changed in order to
      * disambiguate it against other similar methods of this class.
      */
-    @SuppressWarnings("removal")
     private String(Charset charset, byte[] bytes, int offset, int length) {
         if (length == 0) {
             this.value = "".value;
@@ -787,7 +786,6 @@ public final class String
         }
     }
 
-    @SuppressWarnings("removal")
     private static String newStringNoRepl1(byte[] src, Charset cs) {
         int len = src.length;
         if (len == 0) {

src/java.base/share/classes/java/lang/System.java

@@ -1379,7 +1379,6 @@ public final class System {
 
 
         private static volatile LoggerFinder service;
-        @SuppressWarnings("removal")
         static LoggerFinder accessProvider() {
             // We do not need to synchronize: LoggerFinderLoader will
             // always return the same instance, so if we don't have it,
@@ -1483,7 +1482,6 @@ public final class System {
      *
      * @since 9
      */
-    @SuppressWarnings("removal")
     @CallerSensitive
     public static Logger getLogger(String name, ResourceBundle bundle) {
         final ResourceBundle rb = Objects.requireNonNull(bundle);

src/java.base/share/classes/java/lang/invoke/ClassSpecializer.java

@@ -578,7 +578,6 @@ abstract class ClassSpecializer<T,K,S extends ClassSpecializer<T,K,S>.SpeciesDat
          * @param speciesData what species we are generating
          * @return the generated concrete TopClass class
          */
-        @SuppressWarnings("removal")
         Class<? extends T> generateConcreteSpeciesCode(String className, ClassSpecializer<T,K,S>.SpeciesData speciesData) {
             byte[] classFile = generateConcreteSpeciesCodeFile(className, speciesData);
             var lookup = new MethodHandles.Lookup(topClass);

src/java.base/share/classes/java/lang/reflect/ProxyGenerator.java

@@ -103,7 +103,6 @@ final class ProxyGenerator {
     /**
      * debugging flag for saving generated class files
      */
-    @SuppressWarnings("removal")
     private static final boolean SAVE_GENERATED_FILES =
             Boolean.getBoolean("jdk.proxy.ProxyGenerator.saveGeneratedFiles");
 

src/java.base/share/classes/java/net/URLConnection.java

@@ -1388,7 +1388,6 @@ public abstract class URLConnection {
         return UnknownContentHandler.INSTANCE;
     }
 
-    @SuppressWarnings("removal")
     private ContentHandler lookupContentHandlerViaProvider(String contentType) {
 
         ClassLoader cl = ClassLoader.getSystemClassLoader();