fancontroller: remove percentage log entry

This log entry was just to debug something and also didn't have
a corresponding header in the log file.  It is no longer necessary.

Tested: Ran on quanta-q71l and verified the log looked as expected.
Change-Id: I4a433cf8181c7d28977bf60ca932d25a4b307c84
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/pid/fancontroller.cpp b/pid/fancontroller.cpp
index b5949a8..b0b300f 100644
--- a/pid/fancontroller.cpp
+++ b/pid/fancontroller.cpp
@@ -137,10 +137,6 @@
         sensor->write(static_cast<double>(percent));
     }
 
-#ifdef __TUNING_LOGGING__
-    _owner->getLogHandle() << "," << percent;
-#endif
-
     return;
 }