[LNT] Remove dead code

Summary:
Remove 2 blocks of dead code in LNT:
- safediv() method which is not used anywhere
- setting of derive_stat attribute of a MatrixDataRequest which is not
  used by anything.

Reviewers: cmatthews, hubert.reinterpretcast, kristof.beyls

Reviewed By: hubert.reinterpretcast

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D68097

llvm-svn: 373153

Author: Thomas Preud'homme

lnt/server/ui/util.py

@@ -12,13 +12,6 @@ def toColorString(col):
     return "#%02x%02x%02x" % (r, g, b)
 
 
-def safediv(a, b, default=None):
-    try:
-        return a / b
-    except ZeroDivisionError:
-        return default
-
-
 def makeDarkerColor(h):
     return makeDarkColor(h, 0.50)
 

lnt/server/ui/views.py

@@ -1771,9 +1771,6 @@ def v4_matrix():
             req.samples[s[1]].append(s[0])
             all_orders.add(s[1])
             order_to_id[s[1]] = s[2]
-        req.derive_stat = {}
-        for order, samples in req.samples.items():
-            req.derive_stat[order] = mean(samples)
     if not all_orders:
         abort(404, "No data found.")
     # Now grab the baseline data.