[arrow] branch master updated: ARROW-15552: [Doc][Format] Remove erroneous mention of base64

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The following commit(s) were added to refs/heads/master by this push:
     new fa4d517  ARROW-15552: [Doc][Format] Remove erroneous mention of base64
fa4d517 is described below

commit fa4d517b867e7857f07a88c946f2d2dbb5edce96
Author: Antoine Pitrou <an...@python.org>
AuthorDate: Tue Feb 8 11:36:41 2022 +0100

    ARROW-15552: [Doc][Format] Remove erroneous mention of base64
    
    This is probably a leftover of a draft version of the C data interface which involved base64 encoding of metadata values.
    
    Closes #12361 from pitrou/ARROW-15552-c-data-interface-base64
    
    Authored-by: Antoine Pitrou <an...@python.org>
    Signed-off-by: Antoine Pitrou <an...@python.org>
---
 docs/source/format/CDataInterface.rst | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/docs/source/format/CDataInterface.rst b/docs/source/format/CDataInterface.rst
index d43dc76..6ed2392 100644
--- a/docs/source/format/CDataInterface.rst
+++ b/docs/source/format/CDataInterface.rst
@@ -511,8 +511,7 @@ For extension arrays, the :c:member:`ArrowSchema.format` string encodes the
 metadata key ``ARROW:extension:name``  encodes the extension type name,
 and the metadata key ``ARROW:extension:metadata`` encodes the
 implementation-specific serialization of the extension type (for
-parameterized extension types).  The base64 encoding of metadata values
-ensures that any possible serialization is representable.
+parameterized extension types).
 
 The ``ArrowArray`` structure exported from an extension array simply points
 to the storage data of the extension array.