Remove dependency on libolm (#12704)

* Remove dependency on libolm

We no longer use this (and haven't for some time, afaict).

* Make olm a dev dep

* Revert "Make olm a dev dep"

This reverts commit f733cdfaf0d7af198b89a10021a976e8f4fff632.

package.json

@@ -73,7 +73,6 @@
         "@matrix-org/analytics-events": "^0.23.0",
         "@matrix-org/emojibase-bindings": "^1.1.2",
         "@matrix-org/matrix-wysiwyg": "2.37.4",
-        "@matrix-org/olm": "3.2.15",
         "@matrix-org/react-sdk-module-api": "^2.4.0",
         "@matrix-org/spec": "^1.7.0",
         "@sentry/browser": "^8.0.0",

yarn.lock

@@ -1879,11 +1879,6 @@
   resolved "https://registry.yarnpkg.com/@matrix-org/matrix-wysiwyg/-/matrix-wysiwyg-2.37.4.tgz#bd9b46051a21c9986477e3a83a1417b1ee926d81"
   integrity sha512-4OtBWAHNAOu9P5C6jOIeHlu4ChwV2YusxnbGuN20IceC4bT2h38flZQgm0x9/jgHfF0LwnKUwKXsxtRoq8xW0g==
 
-"@matrix-org/olm@3.2.15":
-  version "3.2.15"
-  resolved "https://registry.yarnpkg.com/@matrix-org/olm/-/olm-3.2.15.tgz#55f3c1b70a21bbee3f9195cecd6846b1083451ec"
-  integrity sha512-S7lOrndAK9/8qOtaTq/WhttJC/o4GAzdfK0MUPpo8ApzsJEC0QjtwrkC3KBXdFP1cD1MXi/mlKR7aaoVMKgs6Q==
-
 "@matrix-org/react-sdk-module-api@^2.4.0":
   version "2.4.0"
   resolved "https://registry.yarnpkg.com/@matrix-org/react-sdk-module-api/-/react-sdk-module-api-2.4.0.tgz#5e4552acbe728141f42c1d54d75dcb4efea9301c"