Removed unnecessary parenthesis.

src/ImageSharp/Formats/Bmp/BmpDecoderCore.cs

@@ -290,7 +290,7 @@ namespace ImageSharp.Formats
                             byte g = (byte)(((temp & Rgb16GMask) >> 5) * ScaleG);
                             byte b = (byte)((temp & Rgb16BMask) * ScaleR);
 
-                            int arrayOffset = ((row * width) + x);
+                            int arrayOffset = (row * width) + x;
 
                             // Stored in b-> g-> r order.
                             TColor packed = default(TColor);
@@ -330,7 +330,7 @@ namespace ImageSharp.Formats
                         for (int x = 0; x < width; x++)
                         {
                             int offset = rowOffset + (x * 3);
-                            int arrayOffset = ((row * width) + x);
+                            int arrayOffset = (row * width) + x;
 
                             // Stored in b-> g-> r-> a order.
                             TColor packed = default(TColor);
@@ -370,7 +370,7 @@ namespace ImageSharp.Formats
                         for (int x = 0; x < width; x++)
                         {
                             int offset = rowOffset + (x * 4);
-                            int arrayOffset = ((row * width) + x);
+                            int arrayOffset = (row * width) + x;
 
                             // Stored in b-> g-> r-> a order.
                             TColor packed = default(TColor);

src/ImageSharp/Formats/Png/Zlib/ZlibDeflateStream.cs

@@ -196,7 +196,7 @@ namespace ImageSharp.Formats
                 this.rawStream.WriteByte((byte)((crc >> 24) & 0xFF));
                 this.rawStream.WriteByte((byte)((crc >> 16) & 0xFF));
                 this.rawStream.WriteByte((byte)((crc >> 8) & 0xFF));
-                this.rawStream.WriteByte((byte)((crc) & 0xFF));
+                this.rawStream.WriteByte((byte)(crc & 0xFF));
             }
 
             base.Dispose(disposing);

src/ImageSharp/Samplers/Processors/OilPaintingProcessor.cs

@@ -119,7 +119,7 @@ namespace ImageSharp.Processors
                                         float sourceBlue = color.Z;
                                         float sourceGreen = color.Y;
 
-                                        int currentIntensity = (int)Math.Round(((sourceBlue + sourceGreen + sourceRed) / 3.0 * (levels - 1)));
+                                        int currentIntensity = (int)Math.Round((sourceBlue + sourceGreen + sourceRed) / 3.0 * (levels - 1));
 
                                         intensityBin[currentIntensity] += 1;
                                         blueBin[currentIntensity] += sourceBlue;