Remove unrelated CI configuration changes

Author: Takishima

.github/workflows/ci.yml

@@ -27,23 +27,10 @@ jobs:
     steps:
     - uses: actions/checkout@v2
 
-    - name: Get history and tags for SCM versioning to work (Unix)
-      if: runner.os != 'Windows'
-      run: |
-        if [ $(git rev-parse --is-shallow-repository) == "true" ]; then
-            git fetch --prune --unshallow
-            git fetch --depth=1 origin +refs/tags/*:refs/tags/*
-        fi
-
-    - name: Get history and tags for SCM versioning to work (Windows)
-      if: runner.os == 'Windows'
+    - name: Get history and tags for SCM versioning to work
       run: |
-        $value = git rev-parse --is-shallow-repository
-        if ( $value -eq "true" )
-        {
-            git fetch --prune --unshallow
-            git fetch --depth=1 origin +refs/tags/*:refs/tags/*
-        }
+        git fetch --prune --unshallow
+        git fetch --depth=1 origin +refs/tags/*:refs/tags/*
 
     - name: Setup Python ${{ matrix.python }}
       uses: actions/setup-python@v2
@@ -110,8 +97,7 @@ jobs:
       fail-fast: false
       matrix:
         clang:
-          - 3.7  # could be 3.5 version for full C++14 support (3.4 fails because of -fstack-protector-strong)
-                 # but for proper OpenMP support we require 3.7
+          - 3.5  # version for full C++14 support (3.4 fails because of -fstack-protector-strong)
           - 5    # earliest version for reasonable C++17 support
           - 10   # version for full C++17 support (with patches)
           - latest
@@ -128,10 +114,8 @@ jobs:
 
     - name: Get history and tags for SCM versioning to work
       run: |
-        if [ $(git rev-parse --is-shallow-repository) == "true" ]; then
-            git fetch --prune --unshallow
-            git fetch --depth=1 origin +refs/tags/*:refs/tags/*
-        fi
+        git fetch --prune --unshallow
+        git fetch --depth=1 origin +refs/tags/*:refs/tags/*
 
     - name: Prepare env
       run: >
@@ -181,10 +165,8 @@ jobs:
 
     - name: Get history and tags for SCM versioning to work
       run: |
-        if [ $(git rev-parse --is-shallow-repository) == "true" ]; then
-            git fetch --prune --unshallow
-            git fetch --depth=1 origin +refs/tags/*:refs/tags/*
-        fi
+        git fetch --prune --unshallow
+        git fetch --depth=1 origin +refs/tags/*:refs/tags/*
 
     - name: Prepare env
       run: >
@@ -251,10 +233,8 @@ jobs:
 
     - name: Get history and tags for SCM versioning to work
       run: |
-        if [ $(git rev-parse --is-shallow-repository) == "true" ]; then
-            git fetch --prune --unshallow
-            git fetch --depth=1 origin +refs/tags/*:refs/tags/*
-        fi
+        git fetch --prune --unshallow
+        git fetch --depth=1 origin +refs/tags/*:refs/tags/*
 
     - name: Create pip cache dir
       run: mkdir -p ~/.cache/pip
@@ -304,10 +284,8 @@ jobs:
 
     - name: Get history and tags for SCM versioning to work
       run: |
-        if [ $(git rev-parse --is-shallow-repository) == "true" ]; then
-            git fetch --prune --unshallow
-            git fetch --depth=1 origin +refs/tags/*:refs/tags/*
-        fi
+        git fetch --prune --unshallow
+        git fetch --depth=1 origin +refs/tags/*:refs/tags/*
 
     - uses: actions/setup-python@v2
 
@@ -341,14 +319,10 @@ jobs:
     steps:
     - uses: actions/checkout@v2
 
-    - name: Get history and tags for SCM versioning to work (Windows)
+    - name: Get history and tags for SCM versioning to work
       run: |
-        $value = git rev-parse --is-shallow-repository
-        if ( $value -eq "true" )
-        {
-            git fetch --prune --unshallow
-            git fetch --depth=1 origin +refs/tags/*:refs/tags/*
-        }
+        git fetch --prune --unshallow
+        git fetch --depth=1 origin +refs/tags/*:refs/tags/*
 
     - name: Get pip cache dir
       id: pip-cache