l10n: Remove msgids

In English this looks OK and more or less consistent.

In French and probably other Latin languages this causes a problem because the subject of the imperative isn't the same:

- "Enter text" --> this is addressed to the user.
- "Search in "%s" --> this describes what the program is about to do, if anything it's imperative addressed to the computer/program.

Typically in French we would use the 2nd person to conjugate the first sentence in the imperative tense:

"Entrez.."

but we'd use the infinitive to describe the action or what we want the program to achieve:

"Chercher"

This makes the two entries very inconsistent and creates confusion.

Author: clefebvre

gresources/nemo-search-bar.glade

@@ -156,7 +156,6 @@
                         <property name="can_focus">True</property>
                         <property name="caps_lock_warning">False</property>
                         <property name="secondary_icon_name">system-search-symbolic</property>
-                        <property name="placeholder_text" translatable="yes">Enter text to search for</property>
                       </object>
                       <packing>
                         <property name="expand">True</property>

src/nemo-query-editor.c

@@ -666,18 +666,8 @@ void
 nemo_query_editor_set_location (NemoQueryEditor *editor,
 				    GFile               *location)
 {
-    gchar *basename, *placeholder_text;
-
 	g_free (editor->priv->current_uri);
 	editor->priv->current_uri = g_file_get_uri (location);
-
-    basename = g_file_get_basename (location);
-    placeholder_text = g_strdup_printf (_("Search in %s"), basename);
-
-    gtk_entry_set_placeholder_text (GTK_ENTRY (editor->priv->file_entry), placeholder_text);
-
-    g_free (basename);
-    g_free (placeholder_text);
 }
 
 void
@@ -740,8 +730,7 @@ nemo_query_editor_set_active (NemoQueryEditor *editor,
 
         if (g_file_is_native (base)) {
             gtk_widget_set_sensitive (editor->priv->content_main_box, TRUE);
-            gtk_entry_set_placeholder_text (GTK_ENTRY (editor->priv->content_entry),
-                                            _("Enter text to search for"));
+            gtk_entry_set_placeholder_text (GTK_ENTRY (editor->priv->content_entry), "");
         } else {
             gtk_widget_set_sensitive (editor->priv->content_main_box, FALSE);
             gtk_entry_set_placeholder_text (GTK_ENTRY (editor->priv->content_entry),