drop init theme vars from mmd's for GH-Action

Author: bbest

diagrams/portals_flow.mmd

@@ -1,15 +1,3 @@
-%%{init: {
-  'theme': 'base',
-  'themeVariables': {
-    'primaryColor': '#E0E7FF',
-    'primaryTextColor': '#312E81',
-    'primaryBorderColor': '#6366F1',
-    'lineColor': '#818CF8',
-    'secondaryColor': '#FEF3C7',
-    'tertiaryColor': '#ECFDF5'
-  }
-}}%%
-
 graph TD
   %% nodes with styles
   raw([raw data]):::source

diagrams/portals_metadata.mmd

@@ -1,14 +1,3 @@
-%%{init: {
-  'theme': 'base',
-  'themeVariables': {
-    'primaryColor': '#E0E7FF',
-    'primaryTextColor': '#312E81',
-    'primaryBorderColor': '#6366F1',
-    'lineColor': '#818CF8',
-    'secondaryColor': '#FEF3C7',
-    'tertiaryColor': '#ECFDF5'
-  }
-}}%%
 graph LR
     subgraph inputs[Data & Metadata]
         data([data.csv]):::source