fix: remove insufficient check for coloncolon

Author: yue4u

crates/ide-completion/src/context.rs

@@ -585,9 +585,6 @@ impl<'a> CompletionContext<'a> {
                     return None;
                 }
             }
-            T![::] if !is_prev_token_valid_path_start_or_segment(&original_token) => {
-                return None;
-            }
             _ => {}
         }
 

crates/ide-completion/src/tests/special.rs

@@ -977,13 +977,6 @@ fn foo { crate:::$0 }
     check(
         r#"
 fn foo { crate::::$0 }
-"#,
-        expect![""],
-    );
-
-    check(
-        r#"
-fn foo { crate:::::$0 }
 "#,
         expect![""],
     );