Remove explicitly set font-family

Signed-off-by: Šimon Brandner <simon.bra.ag@gmail.com>

res/css/views/dialogs/_AddressPickerDialog.scss

@@ -29,7 +29,6 @@ limitations under the License.
 .mx_AddressPickerDialog_input:focus {
     height: 26px;
     font-size: $font-14px;
-    font-family: $font-family;
     padding-left: 12px;
     padding-right: 12px;
     margin: 0 !important;

res/css/views/dialogs/_ConfirmUserActionDialog.scss

@@ -34,7 +34,6 @@ limitations under the License.
 }
 
 .mx_ConfirmUserActionDialog_reasonField {
-    font-family: $font-family;
     font-size: $font-14px;
     color: $primary-fg-color;
     background-color: $primary-bg-color;

res/css/views/dialogs/_DevtoolsDialog.scss

@@ -123,7 +123,6 @@ limitations under the License.
     + .mx_DevTools_tgl-btn {
         padding: 2px;
         transition: all .2s ease;
-        font-family: sans-serif;
         perspective: 100px;
         &::after,
         &::before {

res/css/views/elements/_Field.scss

@@ -39,7 +39,6 @@ limitations under the License.
 .mx_Field select,
 .mx_Field textarea {
     font-weight: normal;
-    font-family: $font-family;
     font-size: $font-14px;
     border: none;
     // Even without a border here, we still need this avoid overlapping the rounded

res/css/views/settings/tabs/_SettingsTab.scss

@@ -36,7 +36,6 @@ limitations under the License.
 .mx_SettingsTab_subheading {
     font-size: $font-16px;
     display: block;
-    font-family: $font-family;
     font-weight: 600;
     color: $primary-fg-color;
     margin-bottom: 10px;