Remove unused call thumbnail code

// FREEBIE

Signal/src/Models/OWSCall.h

@@ -14,7 +14,6 @@ typedef enum : NSUInteger {
     kGroupUpdate = 6
 } CallStatus;
 
-
 @interface OWSCall : NSObject <JSQMessageData, NSCoding, NSCopying>
 
 /*
@@ -22,7 +21,6 @@ typedef enum : NSUInteger {
  */
 @property (copy, nonatomic, readonly) NSString *senderId;
 
-
 /*
  * Returns the display name for user who initiated the call
  */
@@ -44,18 +42,11 @@ typedef enum : NSUInteger {
  */
 @property (nonatomic) TSMessageAdapterType messageType;
 
-/*
- * User can configure whether a thumbnail is used in the display of this cell or not
- */
-@property (nonatomic) BOOL useThumbnail;
-
 /**
  *  String to be displayed
  */
-
 @property (nonatomic, copy) NSString *detailString;
 
-
 #pragma mark - Initialization
 
 - (instancetype)initWithCallerId:(NSString *)callerId
@@ -66,6 +57,4 @@ typedef enum : NSUInteger {
 
 - (NSString *)dateText;
 
-- (UIImage *)thumbnailImage;
-
 @end

Signal/src/Models/OWSCall.m

@@ -2,7 +2,6 @@
 //  Portions Copyright (c) 2016 Open Whisper Systems. All rights reserved.
 
 #import "OWSCall.h"
-
 #import <JSQMessagesViewController/JSQMessagesTimestampFormatter.h>
 #import <JSQMessagesViewController/UIImage+JSQMessages.h>
 
@@ -57,35 +56,6 @@
     return [dateFormatter stringFromDate:_date];
 }
 
-- (UIImage *)thumbnailImage
-{
-    // This relies on those assets being in the project
-    if (!_useThumbnail) {
-        return nil;
-    }
-    switch (_status) {
-        case kCallOutgoing:
-            return [UIImage imageNamed:@"statCallOutgoing--blue"];
-            break;
-        case kCallIncoming:
-        case kCallMissed:
-            return [UIImage imageNamed:@"statCallIncoming--blue"];
-            break;
-        case kGroupUpdate:
-            return [UIImage imageNamed:@"statRefreshedGroup--blue"];
-            break;
-        case kGroupUpdateLeft:
-            return [UIImage imageNamed:@"statLeftGroup--blue"];
-            break;
-        case kGroupUpdateJoin:
-            return [UIImage imageNamed:@"statJoinedGroup--blue"];
-            break;
-        default:
-            return nil;
-            break;
-    }
-}
-
 #pragma mark - NSObject
 
 - (BOOL)isEqual:(id)object

Signal/src/Models/TSMessageAdapaters/TSMessageAdapter.m

@@ -138,7 +138,6 @@
         adapter.messageBody = @"Placeholder for TSCalls";
         adapter.messageType = TSCallAdapter;
         OWSCall *call       = [self owsCallForTSCall:(TSCall *)interaction thread:(TSContactThread *)thread];
-        call.useThumbnail   = NO; // disables use of iconography to represent group update actions
         return call;
     } else if ([interaction isKindOfClass:[TSInfoMessage class]]) {
         TSInfoMessage *infoMessage = (TSInfoMessage *)interaction;
@@ -160,7 +159,6 @@
                                                          date:nil
                                                        status:status
                                                 displayString:@""];
-            call.useThumbnail = NO; // disables use of iconography to represent group update actions
             return call;
         }
     } else {

Signal/src/view controllers/MessagesViewController.m

@@ -840,18 +840,6 @@ typedef enum : NSUInteger {
 
         const NSRange range = NSMakeRange([text length],[[call dateText] length]);
         [attributedText setAttributes:subAttrs range:range];
-
-        BOOL isOutgoing = [self.senderId isEqualToString:call.senderId];
-        if (isOutgoing)
-        {
-            callCell.outgoingCallImageView.image = [call thumbnailImage];
-        } else {
-            callCell.incomingCallImageView.image = [call thumbnailImage];
-        }
-    } else {
-        // TODO wrt comment, does it make sense to receive a group meta message in a *call* or was this copy/paste misfire?
-        // A group meta message
-        callCell.incomingCallImageView.image = [call thumbnailImage];
     }
     callCell.cellLabel.attributedText = attributedText;
     callCell.cellLabel.numberOfLines = 0; // uses as many lines as it needs