DOC: waveMaker - removed references to unused x0 input parameter

src/waveModels/derivedPointPatchFields/waveMaker/waveMakerPointPatchVectorField.H

@@ -58,7 +58,6 @@ Usage
     \table
         Property     | Description                  | Required | Default value
         motionType   | See motion types below       | yes      |
-        x0           | Reference point on patch     | yes      |
         n            | Direction of motion          | yes      |
         initialDepth | Initial depth                | yes      |
         wavePeriod   | wave period                  | yes      |

tutorials/multiphase/interFoam/laminar/waves/waveMakerFlap/0.orig/pointDisplacement

@@ -37,7 +37,6 @@ boundaryField
         value           uniform (0 0 0);
 
         motionType      flap;
-        x0              (0 0 0);
         n               (1 0 0);
         waveHeight      0.06;
         initialDepth    0.25;

tutorials/multiphase/interFoam/laminar/waves/waveMakerMultiPaddleFlap/0.orig/pointDisplacement

@@ -37,7 +37,6 @@ boundaryField
         value           uniform (0 0 0);
 
         motionType      flap;
-        x0              (0 0 0);
         n               (1 0 0);
         waveHeight      0.06;
         initialDepth    0.25;

tutorials/multiphase/interFoam/laminar/waves/waveMakerMultiPaddlePiston/0.orig/pointDisplacement

@@ -37,7 +37,6 @@ boundaryField
         value           uniform (0 0 0);
 
         motionType      piston;
-        x0              (0 0 0);
         n               (1 0 0);
         waveHeight      0.06;
         initialDepth    0.25;

tutorials/multiphase/interFoam/laminar/waves/waveMakerPiston/0.orig/pointDisplacement

@@ -37,7 +37,6 @@ boundaryField
         value           uniform (0 0 0);
 
         motionType      piston;
-        x0              (0 0 0);
         n               (1 0 0);
         waveHeight      0.06;
         initialDepth    0.25;

tutorials/multiphase/interFoam/laminar/waves/waveMakerSolitary/0.orig/pointDisplacement

@@ -37,7 +37,6 @@ boundaryField
         value           uniform (0 0 0);
 
         motionType      solitary;
-        x0              (0 0 0);
         n               (1 0 0);
         waveHeight      0.1;
         initialDepth    0.2;