Remove shebang from nonexecutable script

When packaging chardet and pip (which bundles it) in Fedora, we have realized
that there is a nonexecuatble file with a shebang line.

It seems that the primary purpose of this file is to be imported from Python
code or to be executed via python chardet/cli/chardetect.py or
python -m chardet.cli.chardetect and hence the shebang appears to be unnecessary.

Shebangs are hard to handle when doing downstream packaging, because it makes
sense for upstream to use #!/usr/bin/env python while in the RPM package, we
need to avoid that and use a more specific interpreter. Since the shebang was
unused, I propose to remove it to avoid the problems.

chardet/cli/chardetect.py

@@ -1,4 +1,3 @@
-#!/usr/bin/env python
 """
 Script which takes one or more file paths and reports on their detected
 encodings