meta-phosphor: drop dead pid control bbclass

This bbclass isn't used anymore.  Remove.

Change-Id: I59526060913fe295bb397bc769e4acd3e5634ed4
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/classes/phosphor-pid-control.bbclass b/classes/phosphor-pid-control.bbclass
deleted file mode 100644
index 3f69338..0000000
--- a/classes/phosphor-pid-control.bbclass
+++ /dev/null
@@ -1,5 +0,0 @@
-config_datadir="${datadir}/swampd/"
-# config_path is the location swampd expects to find a json configuration.
-# the file is expected to be named config.json
-config_path="${config_datadir}config.json"
-
diff --git a/recipes-phosphor/fans/phosphor-pid-control_git.bb b/recipes-phosphor/fans/phosphor-pid-control_git.bb
index b615293..aa8db80 100644
--- a/recipes-phosphor/fans/phosphor-pid-control_git.bb
+++ b/recipes-phosphor/fans/phosphor-pid-control_git.bb
@@ -8,7 +8,6 @@
 
 inherit autotools pkgconfig
 
-inherit phosphor-pid-control
 inherit obmc-phosphor-ipmiprovider-symlink
 inherit systemd