bitbake.conf: Drop export of SOURCE_DATE_EPOCH_FALLBACK

Whilst SDE definitely needs to be exported, the fallback does not as
it is only used in our python code via the datastore.

It was introduced as an export in 9a1dde74e794362399193dc3f81c9685a83d0776
but even then it doesn't look like it needed to be, likely just a copy and
paste mistake.

Drop the export.

(From OE-Core rev: 5ae95506b7818f142e2cd8adf46bfd2d5282983d)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
(cherry picked from commit 74fb6539dd06acb0dd6a9af4809152975e8473e6)
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/meta/conf/bitbake.conf b/meta/conf/bitbake.conf
index 62cdd9aa9c..a1f0f624e9 100644
--- a/meta/conf/bitbake.conf
+++ b/meta/conf/bitbake.conf
@@ -676,7 +676,7 @@ export PYTHONHASHSEED = "0"
 export PERL_HASH_SEED = "0"
 export SOURCE_DATE_EPOCH ?= "${@get_source_date_epoch_value(d)}"
 # A SOURCE_DATE_EPOCH of '0' might be misinterpreted as no SDE
-export SOURCE_DATE_EPOCH_FALLBACK ??= "1302044400"
+SOURCE_DATE_EPOCH_FALLBACK ??= "1302044400"
 REPRODUCIBLE_TIMESTAMP_ROOTFS ??= "1520598896"
 
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