CI: Clean more GitHub action (remove unneeded mkdir)

Signed-off-by: Stefan Weil <sw@weilnetz.de>

Author: stweil

.github/workflows/autotools-openmp.yml

@@ -37,7 +37,6 @@ jobs:
 
     - name: Setup Tesseract
       run: |
-           mkdir -p m4
            ./autogen.sh
 
     - name: Configure Tesseract

.github/workflows/autotools.yml

@@ -45,7 +45,6 @@ jobs:
 
     - name: Setup Tesseract
       run: |
-           mkdir -p m4
            ./autogen.sh
 
     - name: Configure Tesseract

.github/workflows/msys2.yml

@@ -41,7 +41,6 @@ jobs:
 
     - name: Setup Tesseract
       run: |
-           mkdir -p m4
            ./autogen.sh
 
     - name: Configure Tesseract

.github/workflows/unittest-disablelegacy.yml

@@ -31,7 +31,6 @@ jobs:
 
     - name: Setup
       run: |
-           mkdir -p m4
            ./autogen.sh
 
     - name: Configure

.github/workflows/unittest.yml

@@ -37,7 +37,6 @@ jobs:
 
     - name: Setup
       run: |
-           mkdir -p m4
            ./autogen.sh
 
     - name: Configure (Linux)