remove some internal deprecations

Author: FalsePattern

src/main/java/com/falsepattern/lib/internal/impl/config/ConfigurationManagerImpl.java

@@ -110,13 +110,6 @@ public static boolean validateFields(BiConsumer<Class<?>, Field> invalidFieldHan
         return parsed.validate(invalidFieldHandler, resetInvalid);
     }
 
-    @Deprecated
-    public static void registerLoadSaveConfig(Class<?> configClass) throws ConfigException {
-        register(configClass);
-        load(configClass);
-        save(configClass);
-    }
-
     public static void sendRequest(DataOutput output) throws IOException {
         val synced = new ArrayList<Class<?>>();
         val inv = serializedNames.inverse();

src/main/java/com/falsepattern/lib/internal/impl/dependencies/DependencyLoaderImpl.java

@@ -147,12 +147,6 @@ public static void addMavenRepo(String url) {
         mavenRepositories.add(url);
     }
 
-    @Deprecated
-    public static void loadLibrary(@NonNull String loadingModId, @NonNull String groupId, @NonNull String artifactId, @NonNull Version minVersion, Version maxVersion, @NonNull Version preferredVersion, String regularSuffix, String devSuffix) {
-        new DependencyLoadTask(loadingModId, groupId, artifactId, minVersion, maxVersion, preferredVersion,
-                               regularSuffix, devSuffix).load();
-    }
-
     private static String bytesToHex(byte[] hash) {
         StringBuilder hexString = new StringBuilder(2 * hash.length);
         for (byte b : hash) {

src/main/java/com/falsepattern/lib/mapping/types/UniversalMethod.java

@@ -173,16 +173,6 @@ public <T> T invokeStatic(Object... arguments) {
         return invoke(null, arguments);
     }
 
-    /**
-     * This is only here for completeness' sake, given that MethodInsnNode itself also has a deprecated yet functional constructor.
-     */
-    @Deprecated
-    @StableAPI.Expose
-    public MethodInsnNode asInstruction(int opcode, MappingType mapping) {
-        return new MethodInsnNode(opcode, parent.getName(NameType.Internal, mapping), getName(mapping),
-                                  getDescriptor(mapping));
-    }
-
     @StableAPI.Expose
     public MethodInsnNode asInstruction(int opcode, MappingType mapping, boolean itf) {
         return new MethodInsnNode(opcode, parent.getName(NameType.Internal, mapping), getName(mapping),