Revert "Use correct suffix for elevation" (#5382)

This reverts commit b15270dfe2.

src/onboarding/onboarding-core-config.ts

@@ -116,12 +116,8 @@ class OnboardingCoreConfig extends LitElement {
           @value-changed=${this._handleChange}
         >
           <span slot="suffix">
-            ${this._unitSystem === "metric"
+            ${this.hass.localize(
-              ? this.hass.localize(
               "ui.panel.config.core.section.core.core_config.elevation_meters"
-                )
-              : this.hass.localize(
-                  "ui.panel.config.core.section.core.core_config.elevation_feet"
             )}
           </span>
         </paper-input>

src/panels/config/core/ha-config-core-form.ts

@@ -102,12 +102,8 @@ class ConfigCoreForm extends LitElement {
               @value-changed=${this._handleChange}
             >
               <span slot="suffix">
-                ${this._unitSystem === "metric"
+                ${this.hass.localize(
-                  ? this.hass.localize(
                   "ui.panel.config.core.section.core.core_config.elevation_meters"
-                    )
-                  : this.hass.localize(
-                      "ui.panel.config.core.section.core.core_config.elevation_feet"
                 )}
               </span>
             </paper-input>

src/translations/en.json

@@ -847,7 +847,6 @@
                 "longitude": "Longitude",
                 "elevation": "Elevation",
                 "elevation_meters": "meters",
-                "elevation_feet": "feet",
                 "time_zone": "Time Zone",
                 "unit_system": "Unit System",
                 "unit_system_imperial": "Imperial",