doc-rst: pixfmt-nv16: remove an empty column

The conversion added an empty column (probably, it was used on
DocBook just to increase spacing.

It also added an extra line on one of the texts, breaking
the original paragraph into two ones.

Remove them.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Documentation/linux_tv/media/v4l/pixfmt-nv16.rst

@@ -30,8 +30,7 @@ swapped, the CrCb plane starts with a Cr byte.
 If the Y plane has pad bytes after each row, then the CbCr plane has as
 many pad bytes after its rows.
 
-**Byte Order..**
-
+**Byte Order.**
 Each cell is one byte.
 
 
@@ -156,7 +155,6 @@ Each cell is one byte.
        -  
        -  1
 
-       -  
        -  2
 
        -  
@@ -171,7 +169,6 @@ Each cell is one byte.
        -  
        -  Y
 
-       -  
        -  Y
 
        -  
@@ -183,7 +180,6 @@ Each cell is one byte.
        -  
        -  C
 
-       -  
        -  
        -  
        -  C
@@ -199,7 +195,6 @@ Each cell is one byte.
        -  
        -  Y
 
-       -  
        -  Y
 
        -  
@@ -211,7 +206,6 @@ Each cell is one byte.
        -  
        -  C
 
-       -  
        -  
        -  
        -  C
@@ -231,7 +225,6 @@ Each cell is one byte.
        -  
        -  Y
 
-       -  
        -  Y
 
        -  
@@ -243,7 +236,6 @@ Each cell is one byte.
        -  
        -  C
 
-       -  
        -  
        -  
        -  C
@@ -259,7 +251,6 @@ Each cell is one byte.
        -  
        -  Y
 
-       -  
        -  Y
 
        -  
@@ -271,7 +262,6 @@ Each cell is one byte.
        -  
        -  C
 
-       -  
        -  
        -  
        -  C