Revert of expect_tests > coverage: no data, no fail

expect_tests/cover.py

Index: expect_tests/cover.py
diff --git a/expect_tests/cover.py b/expect_tests/cover.py
index 2cfe6968434739a5ca31a2c9a4b6b293bbfcc1db..dee4f16a05cc3991720c38573f112a368a33d670 100644
--- a/expect_tests/cover.py
+++ b/expect_tests/cover.py
@@ -110,16 +110,7 @@
         self.cov.html_report(directory=self.html_report)
 
       outf = StringIO()
-
-      try:
-        coverage_percent = self.cov.report(file=outf, show_missing=True)
-      except CoverageException as ce:
-        # If we have no data to report, this means that coverage has found no
-        # tests in the module. This is not nice, but we shouldn't fail.
-        if ce.message == 'No data to report.':
-          return
-        raise
-
+      coverage_percent = self.cov.report(file=outf, show_missing=True)
       fail = coverage_percent < self.expected_coverage_min
       summary = outf.getvalue().replace('%- 15s' % 'Name', 'Coverage Report', 1)
       if verbose: