The async extension was superseded by WAL mode about 11 years ago, and has

long been deprecated.  Remove it from the source tree.  (Anybody who really
needs it can still dig it out of the historical records.)

FossilOrigin-Name: f98da150a9c18dfaf9d5178ceee227caf7fce9c9c9194a7a4291abb40de832fa

diff --cc manifest
index 7c4ef8d307eece58a6da0c1fafb4803fe2e37a9d,2a8ee27a4757be0c45870ed6fe8131f85a39df0c..a4e0015ad01f850db60843cdbba19c732354626d
--- 1/manifest
--- 2/manifest
+++ b/manifest
@@@ -1,5 -1,5 +1,5 @@@
- C Have\ssqlite3_rsync\savoid\swrite-locking\sthe\sorigin\sdatabase.
- D 2024-10-28T16:28:43.849
 -C Omit\sthe\santiquated\sand\slong-unsupport\sasync\sextension\ssince\sit\shas\sbeen\nsuperseded\sby\sWAL\smode\sfor\sover\sa\sdecade.
 -D 2024-10-28T15:38:53.409
++C The\sasync\sextension\swas\ssuperseded\sby\sWAL\smode\sabout\s11\syears\sago,\sand\shas\nlong\sbeen\sdeprecated.\s\sRemove\sit\sfrom\sthe\ssource\stree.\s\s(Anybody\swho\sreally\nneeds\sit\scan\sstill\sdig\sit\sout\sof\sthe\shistorical\srecords.)
++D 2024-10-28T16:31:20.697
  F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
  F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
  F LICENSE.md b6e6c1baf38e4339bd3f1e0e5e5bfd0a9a93d133360691b2785c2d4b2f2dcec2
@@@ -2214,8 -2204,11 +2204,9 @@@ F tool/version-info.c 3b36468a90faf1bbd
  F tool/warnings-clang.sh bbf6a1e685e534c92ec2bfba5b1745f34fb6f0bc2a362850723a9ee87c1b31a7
  F tool/warnings.sh 49a486c5069de041aedcbde4de178293e0463ae9918ecad7539eedf0ec77a139
  F tool/win/sqlite.vsix deb315d026cc8400325c5863eef847784a219a2f
--P 1ce8507f732a26508a9b336cb27756a0a8638e14395efdd59b5faef40526ede5
- R 49f8f2fbecb9d9f2f7002e9a5c677568
- U dan
- Z a23c9b99fd9fb556a69898d6ec82974f
 -R b9b93d2e2084015bc7fa1134ed3eba38
 -T *branch * omit-async
 -T *sym-omit-async *
 -T -sym-trunk *
++P b7eb6530505bf774cf3fa5de6ec4bc40f217796d4fa9a149372bd47488ed470f 10b1b86821bfc21377e7ccceb31146ab01aa6eaf418b85a204abcab5b793958e
++R c0dab2d05721f7a4961535e333dd9173
++T +closed 10b1b86821bfc21377e7ccceb31146ab01aa6eaf418b85a204abcab5b793958e
+ U drh
 -Z e51dfe59488ba774ddcef48ab38dfbd3
++Z 5e2ff8c2159e64c6bedc8f4dcf3a85b5
  # Remove this line to create a well-formed Fossil manifest.

diff --cc manifest.uuid
index 99fb8586fce6cb2eb469e253a4409868b627ab1b,97058526f675627bb56e9829131415d9ed0be35e..e4336995a5d3db0779cf935d9ede9ef934c61f2c
--- 1/manifest.uuid
--- 2/manifest.uuid
+++ b/manifest.uuid
@@@ -1,1 -1,1 +1,1 @@@
- b7eb6530505bf774cf3fa5de6ec4bc40f217796d4fa9a149372bd47488ed470f
 -10b1b86821bfc21377e7ccceb31146ab01aa6eaf418b85a204abcab5b793958e
++f98da150a9c18dfaf9d5178ceee227caf7fce9c9c9194a7a4291abb40de832fa