Remove gitter link from Rust SIG (#3227)

Author: cijothomas

README.md

@@ -172,7 +172,7 @@ SIG-specific GitHub discussions.
 | PHP: SDK&nbsp;<a id="sig-php" href="#sig-php"><sup>🔗</sup></a> | Wednesday at 10:30 PT | [Google Doc](https://docs.google.com/document/d/1WLDZGLY24rk5fRudjdQAcx_u81ZQWCF3zxiNT-sz7DI) | [#otel-php](https://cloud-native.slack.com/archives/C01NFPCV44V) | [calendar-php](https://groups.google.com/a/opentelemetry.io/g/calendar-php) | [Severin Neumann](https://github.com/svrnm) |
 | Python: SDK&nbsp;<a id="sig-python" href="#sig-python"><sup>🔗</sup></a> | Thursday at 09:00 PT | [Google Doc](https://docs.google.com/document/d/18w8zOBm_mbety0OqlPwxc7dvnfu641EgmrO4AdJef0U) | [#otel-python](https://cloud-native.slack.com/archives/C01PD4HUVBL) | [calendar-python](https://groups.google.com/a/opentelemetry.io/g/calendar-python) | [Marylia Gutierrez](https://github.com/maryliag) |
 | Ruby: SDK&nbsp;<a id="sig-ruby" href="#sig-ruby"><sup>🔗</sup></a> | Tuesday at 10:00 PT | [Google Doc](https://docs.google.com/document/d/1EaIbfDE1elWTWt3bhilggki_OCRJZoFCSYZJXgc9KsM) | [#otel-ruby](https://cloud-native.slack.com/archives/C01NWKKMKMY) and [GitHub Discussions](https://github.com/open-telemetry/opentelemetry-ruby/discussions) | [calendar-ruby](https://groups.google.com/a/opentelemetry.io/g/calendar-ruby) | [Ted Young](https://github.com/tedsuo) |
-| Rust: SDK&nbsp;<a id="sig-rust" href="#sig-rust"><sup>🔗</sup></a> | Alternating between Tuesday at 09:00 AM PT and Wednesday at 8:00 AM PT | [Google Doc](https://docs.google.com/document/d/12upOzNk8c3SFTjsL6IRohCWMgzLKoknSCOOdMakbWo4) | [#otel-rust](https://cloud-native.slack.com/archives/C03GDP0H023) and [Gitter](https://gitter.im/open-telemetry/opentelemetry-rust) | [calendar-rust](https://groups.google.com/a/opentelemetry.io/g/calendar-rust) | [Ted Young](https://github.com/tedsuo) |
+| Rust: SDK&nbsp;<a id="sig-rust" href="#sig-rust"><sup>🔗</sup></a> | Alternating between Tuesday at 09:00 AM PT and Wednesday at 8:00 AM PT | [Google Doc](https://docs.google.com/document/d/12upOzNk8c3SFTjsL6IRohCWMgzLKoknSCOOdMakbWo4) | [#otel-rust](https://cloud-native.slack.com/archives/C03GDP0H023) | [calendar-rust](https://groups.google.com/a/opentelemetry.io/g/calendar-rust) | [Ted Young](https://github.com/tedsuo) |
 | Swift: SDK&nbsp;<a id="sig-swift" href="#sig-swift"><sup>🔗</sup></a> | Thursday at 09:00 PT | [Google Doc](https://docs.google.com/document/d/1LugL8r4bAkbTxZ1Gq_6j_8SDv1LuZaNeUdR-QLN4d48) | [#otel-swift](https://cloud-native.slack.com/archives/C01NCHR19SB) | [calendar-swift](https://groups.google.com/a/opentelemetry.io/g/calendar-swift) | [Alolita Sharma](https://github.com/alolita) |
 | Network&nbsp;<a id="sig-network" href="#sig-network"><sup>🔗</sup></a> | Tuesday at 09:00 PT | [Google Doc](https://docs.google.com/document/d/13GK915hdDQ9sUYzUIWi4pOfJK68EE935ugutUgL3yOw) | [#otel-network](https://cloud-native.slack.com/archives/C02AB15583A) | [calendar-network](https://groups.google.com/a/opentelemetry.io/g/calendar-network) | [Ted Young](https://github.com/tedsuo) |
 | eBPF Instrumentation&nbsp;<a id="sig-ebpf-instrumentation" href="#sig-ebpf-instrumentation"><sup>🔗</sup></a> | Wednesday at 08:00 PT | [Google Doc](https://docs.google.com/document/d/1ZkmUT2EHKfgtLqrgx3WI8aBy2QNyZeTwSKXxe3DI6Pw) | [#otel-ebpf-instrumentation](https://cloud-native.slack.com/archives/C08P9L4FPKJ) | [calendar-ebpf-instrumentation](https://groups.google.com/a/opentelemetry.io/g/calendar-ebpf-instrumentation) | [Severin Neumann](https://github.com/svrnm) |

sigs.yml

@@ -675,9 +675,6 @@
       - type: slack
         name: '#otel-rust'
         id: C03GDP0H023
-      - type: other
-        name: Gitter
-        link: https://gitter.im/open-telemetry/opentelemetry-rust
     invites: calendar-rust
     sponsors: []
     gcLiaison: