Use intended column name for CircAp12 plots

Any intended use for the "parameters" definitions are not being
taken advantage of and led to an incorrect column to be used for
one set of sky plots.  The safest option for now is to get rid
of the "parameters" in favor of explicitly listing the column
name (this way it should be easier to spot the incorrect use
of "i_ap09Flux" for a plot explicitly labeled as plot_CircAp12_*
that is being fixed here).

pipelines/coaddQAPlots.yaml

@@ -1,15 +1,12 @@
 description: Make coadd plots for QA
-parameters:
-  CoaddApFluxName: "i_ap09Flux"
-  band: i
 tasks:
   # Make a plot showing the difference between the aperture 12 magnitude and the PSF magnitude.
   # This plot shows the on sky distribution of these values for stars.
   plot_CircAp12_sub_PSF_meas_sky_stars:
     class: lsst.analysis.drp.skyPlot.SkyPlotTask
     config:
       axisActions.zAction: MagDiff
-      axisActions.zAction.col1: parameters.CoaddApFluxName
+      axisActions.zAction.col1: "i_ap12Flux"
       axisActions.zAction.col2: "i_psfFlux"
       connections.plotName: CircAp12_sub_PSF_meas_stars_i
       selectorActions.flagSelector: CoaddPlotFlagSelector

pipelines/visitQAPlots.yaml

@@ -5,17 +5,14 @@ description: |
     For visit level plots the bands needs to be set to [""] to allow the code to be reused between
     the coadd level tables, which have band_ prepended to their column names, and the visit level
     tables which do not.
-parameters:
-  VisitApFluxName: "ap12Flux"
-  band: i
 tasks:
   # Make a plot showing the difference between the aperture 12 magnitude and the PS magnitude.
   # This plot shows the on sky distribution of these values for stars.
   plot_CircAp12_sub_PS_meas_sky_stars_visit:
     class: lsst.analysis.drp.skyPlotVisit.SkyPlotVisitTask
     config:
       axisActions.zAction: MagDiff
-      axisActions.zAction.col1: parameters.VisitApFluxName
+      axisActions.zAction.col1: "ap12Flux"
       axisActions.zAction.col2: "psfFlux"
       connections.plotName: CircAp12_sub_PS_meas_stars
       selectorActions.flagSelector: VisitPlotFlagSelector