Revert "[media] docs-rst: escape [] characters"

This patch touches on places where it shouldn't: image
files and code examples. Also, it doesn't fix all array
occurrences.

So, let's revert it.

This reverts commit ffbab694ede33c294e5864a5e0bf4d1474446a71.
diff --git a/Documentation/media/uapi/v4l/vidioc-dqevent.rst b/Documentation/media/uapi/v4l/vidioc-dqevent.rst
index f426b19..73c0d5b 100644
--- a/Documentation/media/uapi/v4l/vidioc-dqevent.rst
+++ b/Documentation/media/uapi/v4l/vidioc-dqevent.rst
@@ -116,7 +116,7 @@
        -
        -  __u8
 
-       -  ``data``\ \[64\]
+       -  ``data``\ [64]
 
        -  Event data. Defined by the event type. The union should be used to
 	  define easily accessible type for events.
@@ -167,7 +167,7 @@
 
        -  __u32
 
-       -  ``reserved``\ \[8\]
+       -  ``reserved``\ [8]
 
        -
        -  Reserved for future extensions. Drivers must set the array to