doc-rst: linux_tv: remove whitespaces

Let's remove bad whitespaces on the entire book.

That helps to avoid mixing whitespace removal with other
patches.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
diff --git a/Documentation/linux_tv/media/v4l/pixfmt-nv12.rst b/Documentation/linux_tv/media/v4l/pixfmt-nv12.rst
index 906d1ef..65ccfb8 100644
--- a/Documentation/linux_tv/media/v4l/pixfmt-nv12.rst
+++ b/Documentation/linux_tv/media/v4l/pixfmt-nv12.rst
@@ -124,15 +124,15 @@
 
     -  .. row 1
 
-       -  
+       -
        -  0
 
-       -  
+       -
        -  1
 
        -  2
 
-       -  
+       -
        -  3
 
     -  .. row 2
@@ -141,69 +141,69 @@
 
        -  Y
 
-       -  
+       -
        -  Y
 
        -  Y
 
-       -  
+       -
        -  Y
 
     -  .. row 3
 
-       -  
-       -  
+       -
+       -
        -  C
 
-       -  
-       -  
+       -
+       -
        -  C
 
-       -  
+       -
 
     -  .. row 4
 
        -  1
 
        -  Y
-       -  
+       -
 
        -  Y
 
        -  Y
 
-       -  
+       -
        -  Y
 
     -  .. row 5
 
-       -  
+       -
 
     -  .. row 6
 
        -  2
 
        -  Y
-       -  
+       -
 
        -  Y
 
        -  Y
 
-       -  
+       -
        -  Y
 
     -  .. row 7
 
-       -  
-       -  
+       -
+       -
        -  C
 
-       -  
-       -  
+       -
+       -
        -  C
 
-       -  
+       -
 
     -  .. row 8
 
@@ -211,10 +211,10 @@
 
        -  Y
 
-       -  
+       -
        -  Y
 
        -  Y
 
-       -  
+       -
        -  Y