Remove redundant CSS rules hiding form and divider elements

The removed CSS rules were unnecessary and prevented certain UI elements from displaying correctly. This change ensures better visibility and functionality of the affected sections in both dark and light themes.

data/gitea/public/assets/css/theme-ctdra-dark.css

@@ -338,11 +338,3 @@ footer {
     bottom: 0;
     z-index: 1000;
 }
-
-div.ui.attached.segment form.ui.form:not(.new-repo-form) {
-    display: none;
-}
-
-div.ui.attached.segment div.divider.divider-text {
-    display: none;
-}

data/gitea/public/assets/css/theme-ctdra-light.css

@@ -313,11 +313,3 @@ footer {
     bottom: 0;
     z-index: 1000;
 }
-
-div.ui.attached.segment form.ui.form:not(.new-repo-form) {
-    display: none;
-}
-
-div.ui.attached.segment div.divider.divider-text {
-    display: none;
-}