removed archived decoder from readme

Author: AlexandreRouma

readme.md

@@ -362,7 +362,6 @@ Modules in beta are still included in releases for the most part but not enabled
 | Name                | Stage      | Dependencies | Option                        | Built by default| Built in Release | Enabled in SDR++ by default |
 |---------------------|------------|--------------|-------------------------------|:---------------:|:----------------:|:---------------------------:|
 | atv_decoder         | Unfinished | -            | OPT_BUILD_ATV_DECODER         | ⛔              | ⛔              | ⛔                         |
-| dmr_decoder         | Unfinished | -            | OPT_BUILD_DMR_DECODER         | ⛔              | ⛔              | ⛔                         |
 | falcon9_decoder     | Unfinished | ffplay       | OPT_BUILD_FALCON9_DECODER     | ⛔              | ⛔              | ⛔                         |
 | kgsstv_decoder      | Unfinished | -            | OPT_BUILD_KGSSTV_DECODER      | ⛔              | ⛔              | ⛔                         |
 | m17_decoder         | Beta       | -            | OPT_BUILD_M17_DECODER         | ⛔              | ✅              | ⛔                         |