Yes, the name that is in tempdb.sys.tables is "droppable" but yes it will also have all the additional characters like at the end of the table name "________________________________________________________________________________________________________________0000000E300B" at the end. Just in case you end up with some stupid naming conventions of temp tables in your script you can use the following just to be safe:

DECLARE @sql NVARCHAR(MAX) = N''

SELECT

@sql = @sql + CHAR(10) + N'DROP TABLE ' + QUOTENAME([TABLE_SCHEMA]) + '.' + QUOTENAME([TABLE_NAME])

FROM [tempdb].[INFORMATION_SCHEMA].[TABLES]

PRINT @sql

EXEC sp_executesql @sql

Though you cannot recreate a table in the tempdb with the same name as a table created earlier in the same batch. For example the following code will cause an error if run in a single batch, but would execute normally if run in separate batches or even if the tables were not created in tempdb:

SELECT

1 AS [var]

INTO #tab

DROP TABLE [#tab]

SELECT

1 AS [var]

INTO #tab