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-g-jpegcomp.rst b/Documentation/media/uapi/v4l/vidioc-g-jpegcomp.rst
index 6e084d3..f5bf8b7 100644
--- a/Documentation/media/uapi/v4l/vidioc-g-jpegcomp.rst
+++ b/Documentation/media/uapi/v4l/vidioc-g-jpegcomp.rst
@@ -94,7 +94,7 @@
 
        -  char
 
-       -  ``APP_data``\ \[60\]
+       -  ``APP_data``\ [60]
 
        -
 
@@ -110,7 +110,7 @@
 
        -  char
 
-       -  ``COM_data``\ \[60\]
+       -  ``COM_data``\ [60]
 
        -