Remove Synth Finance references (#47)

* Remove Synth Finance integration

* Linter noise

* Fix failing (old) test, use it for Twelve Data

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Signed-off-by: Juan José Mata <juanjo.mata@gmail.com>

config/locales/views/settings/hostings/en.yml

@@ -21,13 +21,6 @@ en:
         confirm_clear_cache:
           title: Clear data cache?
           body: Are you sure you want to clear the data cache? This will remove all exchange rates, security prices, account balances, and other data. This action cannot be undone.
-      synth_settings:
-        api_calls_used: "%{used} / %{limit} API calls used (%{percentage})"
-        description: Input the API key provided by Synth
-        label: API Key
-        placeholder: Enter your API key here
-        plan: "%{plan} plan"
-        title: Synth Settings
       twelve_data_settings:
         api_calls_used: "%{used} / %{limit} API daily calls used (%{percentage})"
         description: Input the API key provided by Twelve Data

config/locales/views/settings/hostings/nb.yml

@@ -20,13 +20,6 @@ nb:
         confirm_clear_cache:
           title: Tøm cache?
           body: Er du sikker på at du vil tømme cache? Dette vil fjerne alle valutakurser, verdipapirpriser, kontobalanser og andre data. Denne handlingen kan ikke angres.
-      synth_settings:
-        api_calls_used: "%{used} / %{limit} API-kall brukt (%{percentage})"
-        description: Angi API-nøkkelen som er gitt av Synth
-        label: API-nøkkel
-        placeholder: Angi API-nøkkelen din her
-        plan: "%{plan} plan"
-        title: Synth-innstillinger
       update:
         failure: Ugyldig innstillingsverdi
         success: Innstillinger oppdatert