[ObjC] Breaking Change: Remove deprecated apis.

PiperOrigin-RevId: 684478480

Author: thomasvl

objectivec/GPBDescriptor.h

@@ -114,9 +114,6 @@ __attribute__((objc_subclassing_restricted))
 @property(nonatomic, readonly, copy) NSString *package;
 /** The objc prefix declared in the proto file. */
 @property(nonatomic, readonly, copy, nullable) NSString *objcPrefix;
-/** The syntax of the proto file, this property will be removed in the future. */
-@property(nonatomic, readonly) GPBFileSyntax syntax
-    __attribute__((deprecated("Syntax will be removed in the future.")));
 
 @end
 

objectivec/GPBDescriptor.m

@@ -319,7 +319,6 @@ @implementation GPBFileDescriptor {
 
 @synthesize package = package_;
 @synthesize objcPrefix = objcPrefix_;
-@synthesize syntax = syntax_;
 
 - (instancetype)initWithPackage:(NSString *)package
                      objcPrefix:(NSString *)objcPrefix

objectivec/GPBMessage.h

@@ -241,21 +241,6 @@ CF_EXTERN_C_END
                                     (nullable id<GPBExtensionRegistry>)extensionRegistry
                                             error:(NSError **)errorPtr;
 
-/**
- * Parses the given data as this message's class, and merges those values into
- * this message.
- *
- * @param data              The binary representation of the message to merge.
- * @param extensionRegistry The extension registry to use to look up extensions.
- *
- * @exception GPBCodedInputStreamException Exception thrown when parsing was
- *                                         unsuccessful.
- **/
-- (void)mergeFromData:(NSData *)data
-    extensionRegistry:(nullable id<GPBExtensionRegistry>)extensionRegistry
-    __attribute__((deprecated(
-        "Use -mergeFromData:extensionRegistry:error: instead, especaily if calling from Swift.")));
-
 /**
  * Parses the given data as this message's class, and merges those values into
  * this message.

objectivec/GPBMessage.m

@@ -2227,15 +2227,6 @@ - (void)clearExtension:(GPBExtensionDescriptor *)extension {
 
 #pragma mark - mergeFrom
 
-- (void)mergeFromData:(NSData *)data extensionRegistry:(id<GPBExtensionRegistry>)extensionRegistry {
-  GPBCodedInputStream *input = [[GPBCodedInputStream alloc] initWithData:data];
-  @try {
-    [self mergeFromCodedInputStream:input extensionRegistry:extensionRegistry endingTag:0];
-  } @finally {
-    [input release];
-  }
-}
-
 - (BOOL)mergeFromData:(NSData *)data
     extensionRegistry:(nullable id<GPBExtensionRegistry>)extensionRegistry
                 error:(NSError **)errorPtr {

objectivec/GPBWellKnownTypes.h

@@ -88,17 +88,6 @@ typedef NS_ENUM(NSInteger, GPBWellKnownTypesErrorCode) {
  **/
 - (instancetype)initWithTimeInterval:(NSTimeInterval)timeInterval;
 
-// These next two methods are deprecated because GBPDuration has no need of a
-// "base" time. The older methods were about symmetry with GBPTimestamp, but
-// the unix epoch usage is too confusing.
-
-/** Deprecated, use timeInterval instead. */
-@property(nonatomic, readwrite) NSTimeInterval timeIntervalSince1970
-    __attribute__((deprecated("Use timeInterval")));
-/** Deprecated, use initWithTimeInterval: instead. */
-- (instancetype)initWithTimeIntervalSince1970:(NSTimeInterval)timeIntervalSince1970
-    __attribute__((deprecated("Use initWithTimeInterval:")));
-
 @end
 
 #pragma mark - GPBAny

objectivec/GPBWellKnownTypes.m

@@ -114,10 +114,6 @@ - (instancetype)initWithTimeInterval:(NSTimeInterval)timeInterval {
   return self;
 }
 
-- (instancetype)initWithTimeIntervalSince1970:(NSTimeInterval)timeIntervalSince1970 {
-  return [self initWithTimeInterval:timeIntervalSince1970];
-}
-
 - (NSTimeInterval)timeInterval {
   return TimeIntervalFromSecondsAndNanos(self.seconds, self.nanos);
 }
@@ -129,14 +125,6 @@ - (void)setTimeInterval:(NSTimeInterval)timeInterval {
   self.nanos = nanos;
 }
 
-- (NSTimeInterval)timeIntervalSince1970 {
-  return self.timeInterval;
-}
-
-- (void)setTimeIntervalSince1970:(NSTimeInterval)timeIntervalSince1970 {
-  self.timeInterval = timeIntervalSince1970;
-}
-
 @end
 
 #pragma mark - GPBAny